PAREXEL INTERNATIONAL CORP
S-3, 1997-01-14
COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH
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<PAGE>   1
    As filed with the Securities and Exchange Commission on January 14, 1997

                                                      Registration No. 333-_____
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549
   
                                 ---------------

                                    FORM S-3
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                                 ---------------

                        PAREXEL INTERNATIONAL CORPORATION
             (Exact name of registrant as specified in its charter)
<TABLE>

      <S>                                     <C>                                <C>       
              MASSACHUSETTS                               8731                         04-2776269
       (State or other Jurisdiction           (Primary Standard Industrial          (I.R.S. Employer
      of incorporation organization)          Classification Code Number)        Identification Number)
</TABLE>
                                                          
                                 ---------------

                                 195 WEST STREET
                          WALTHAM, MASSACHUSETTS 02154
                                 (617) 487-9900
    ------------------------------------------------------------------------
    (Address, including zip code, and telephone number, including area code,
                  of registrant's principal executive offices)

                             JOSEF H. VON RICKENBACH
                 PRESIDENT, CHIEF EXECUTIVE OFFICER AND CHAIRMAN
                        PAREXEL INTERNATIONAL CORPORATION
                                 195 WEST STREET
                          WALTHAM, MASSACHUSETTS 02154
                                 (617) 487-9900
    ------------------------------------------------------------------------
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

                                   Copies to:
                             WILLIAM J. SCHNOOR, JR.
                                HEATHER M. STONE
                         TESTA, HURWITZ & THIBEAULT, LLP
                       HIGH STREET TOWER, 125 HIGH STREET
                           BOSTON, MASSACHUSETTS 02110
                                 (617) 248-7000

                                 ---------------

     APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after this registration statement becomes effective.
     If the only securities being registered on this form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box. [ ]
     If any of the securities being registered on this form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. [x]
     If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. [ ]____
     If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [ ]____
     If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]
<TABLE>

                                               CALCULATION OF REGISTRATION FEE
   ==============================================================================================================================
<CAPTION>
   Title of each                         Amount to be       Proposed maximum         Proposed maximum           Amount of
   class of securities to be registered  registered         offering price per       aggregate offering         registration fee
                                                            share(1)                 price(1)                   (2)
   
   ------------------------------------------------------------------------------------------------------------------------------
   <S>                                   <C>                <C>                      <C>                        <C>  
   Common Stock, $.01 par value          330,652 shares     $48.31                   $15,973,798.12             $4,840.55
   ============================================================================================================================== 
<FN>
(1) Estimated solely for the purpose of calculating the registration fee
pursuant to Rule 457 under the Securities Act of 1933.
(2) Pursuant to Rule 457(c) under the Securities Exchange Act of 1933, the
registration fee has been calculated based upon the average of the high and low
prices per share of Common Stock on the Nasdaq National Market on January 9,
1997.
</TABLE>

     THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.
<PAGE>   2



                  SUBJECT TO COMPLETION, DATED JANUARY 14, 1997
PROSPECTUS
                                 330,652 Shares

                        PAREXEL INTERNATIONAL CORPORATION

                                  Common Stock

This prospectus relates to the resale of up to 330,652 shares (the "Shares") of
common stock, par value $.01 per share (the "Common Stock"), of PAREXEL
International Corporation ("PAREXEL" or the "Company") which may be offered
hereby from time to time by any or all of the selling stockholders of the
Company named herein (collectively, the "Selling Stockholders"). The Selling
Stockholders may resell the Shares from time to time at market prices prevailing
at the time of sale, at prices related to such prevailing market prices or at
negotiated prices. The Selling Stockholders may effect these transactions by
reselling the Shares to or through broker-dealers, who may receive compensation
in the form of discounts or commissions from the Selling Stockholders or from
the purchasers of the Shares for whom the broker-dealers may act as an agent or
to whom they may sell as principal, or both. See "Selling Stockholders" and
"Plan of Distribution."

The Company will not receive any of the proceeds from the resale of the Shares.
The Company has agreed to bear all of the expenses in connection with the
registration and resale of the Shares (other than selling commissions and the
fees and expenses of counsel or other advisors to the Selling Stockholders).

On August 22, 1996, the Company entered into a stock purchase agreement with the
stockholders of State and Federal Associates, Inc. ("S&FA") pursuant to which
the Company purchased all outstanding shares of capital stock of S&FA with
shares of Common Stock of the Company. The shares of Common Stock offered hereby
by the Selling Stockholders were acquired by such stockholders upon the closing
of the acquisition of S&FA. In connection with the public offering of Common
Stock by the Company in December 1996, each Selling Stockholder, other than
Robert Raven, agreed with the representatives of the underwriters of the
offering not to sell or otherwise transfer any shares of Common Stock of the
Company owned by such Selling Stockholder until March 6, 1997. See "Selling
Stockholders."

The Common Stock of the Company is quoted on the Nasdaq National Market under
the symbol "PRXL". On January 13, 1997, the last reported sale price for the
Common Stock on the Nasdaq National Market was $48 1/4 per share.
                                  
                               ------------------
   SEE "RISK FACTORS," ON PAGE 6, FOR INFORMATION THAT SHOULD BE CONSIDERED BY
                             PROSPECTIVE INVESTORS.

                               ------------------

THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

                               ------------------

INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT. A
REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT BECOMES
EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE SECURITIES
IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.

                THE DATE OF THIS PROSPECTUS IS           , 1997

<PAGE>   3



                              AVAILABLE INFORMATION

The Company is subject to the informational requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance
therewith files reports, proxy statements and other information with the
Securities and Exchange Commission (the "Commission"). Reports, proxy statements
and other information filed by the Company may be inspected and copied at the
public reference facilities maintained by the Commission at 450 Fifth Street,
N.W., Washington, D.C. 20549 and at the Commission's regional offices located at
Seven World Trade Center, New York, New York 10048, and at Northwestern Atrium
Center, 500 West Madison Street, Suite 1400, Chicago, Illinois 60661. Copies may
also be obtained from the Public Reference Section of the Commission at 450
Fifth Street, N.W., Washington, D.C. 20549 at prescribed rates. In addition, the
Commission maintains a Web site (http://www.sec.gov) that contains reports,
proxy and information statements and other information regarding registrants
that file electronically with the Commission. The Common Stock of the Company is
quoted on the Nasdaq National Market. Reports, proxy statements and other
information concerning the Company may be inspected at the offices of the
National Association of Securities Dealers, Inc. located at 1735 K Street, N.W.,
Washington, D.C. 20006.

The Company has filed with the Commission a Registration Statement on Form S-3
(including all amendments thereto, the "Registration Statement") under the
Securities Act of 1933, as amended (the "Securities Act"), with respect to the
Common Stock offered hereby. This Prospectus does not contain all information
set forth in the Registration Statement, certain parts of which are omitted in
accordance with the rules and regulations of the Commission. For further
information regarding the Company and the Common Stock offered hereby, reference
is hereby made to the Registration Statement and to the exhibits and schedules
filed therewith. Statements contained in this Prospectus regarding the contents
of any agreement or other document filed as an exhibit to the Registration
Statement are necessarily summaries of such documents, and in each instance
reference is made to the copy of such document filed as an exhibit to the
Registration Statement for a more complete description of the matters involved.
The Registration Statement, including the exhibits and schedules thereto, may be
inspected and copied at the public reference facilities maintained by the
Commission at 450 Fifth Street, N.W., Washington, D.C. 20549 or through its Web
site (http://www.sec.gov).

The Company will provide without charge to each person to whom a Prospectus is
delivered, on the written or oral request of any such person, a copy of any or
all of the documents incorporated by reference herein (other than exhibits to
such documents unless such exhibits are specifically incorporated by reference
into such documents). Requests for such copies should be directed to PAREXEL
International Corporation, Attention: Investor Relations Department, 195 West
Street, Waltham, Massachusetts, 02154, telephone number (617) 487-9900.

PAREXEL is a registered service mark of the Company.


                                  2  
<PAGE>   4





                INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

The following documents filed by the Company with the Commission pursuant to the
Exchange Act are incorporated in this Prospectus by reference (File No.
0-27058):

     1.   The Company's Annual Report on Form 10-K for the fiscal year ended
          June 30, 1996.

     2.   The Company's Quarterly Report on Form 10-Q for the quarter ended
          September 30, 1996.

     3.   The description of the Company's Common Stock, $.01 par value per
          share, contained in the Registration Statement on Form 8-A filed under
          the Exchange Act and declared effective on November 21, 1995,
          including any amendment or report filed for the purpose of updating
          such description.

All documents subsequently filed by the Company pursuant to Section 13(a),
13(c), 14 or 15(d) of the Exchange Act, prior to the termination of the offering
of the Shares, shall be deemed to be incorporated by reference in this
Prospectus and made a part hereof from the date of filing of such documents. Any
statement contained in a document incorporated or deemed to be incorporated by
reference in this Prospectus shall be deemed to be modified or superseded for
purposes of this Prospectus to the extent that a statement contained herein or
in any other subsequently filed document which also is or is deemed to be
incorporated by reference herein or in any Prospectus Supplement modifies or
supersedes such statement. Any such statement so modified or superseded shall
not be deemed, except as so modified or superseded, to constitute a part of this
Prospectus.

                                       3


<PAGE>   5



                                     SUMMARY

     The following summary is qualified in its entirety by the more detailed
information appearing elsewhere or incorporated by reference in this Prospectus.
This Prospectus may contain certain "forward-looking" information, as that term
is defined by (i) the Private Securities Litigation Reform Act of 1995 (the
"Act") and (ii) releases made by the Securities and Exchange Commission. Such
information involves risks and uncertainties. The Company's actual results may
differ materially from the results discussed in the forward-looking statements.
Factors that might cause such a difference include, but are not limited to,
those discussed in "Risk Factors."

                                   THE COMPANY

     PAREXEL International Corporation ("PAREXEL" or the "Company") is a leading
contract research organization ("CRO"), providing clinical research and
development services to the worldwide pharmaceutical and biotechnology
industries. The Company believes it is the fourth largest CRO, based on
estimated annual net revenue, and one of only a few CROs capable of providing a
full range of clinical services on a global basis. The Company complements the
research and development departments of pharmaceutical and biotechnology
companies by offering high quality clinical research services to the client and
reducing drug development time and cost. In addition, the Company's integrated
services and extensive information technology capabilities, coupled with its
broad experience and expertise in global drug development, provide clients with
a variable cost alternative to the fixed costs associated with internal drug
development. The Company offers a full complement of clinical research and
development services, including designing, initiating and monitoring clinical
trials, managing and analyzing clinical data and consulting on regulatory
affairs.

     PAREXEL's integrated information systems and worldwide network of offices
enable the Company to provide high-quality comprehensive services on a global
basis. The Company has provided clinical research and development services in
North America since 1985, in Europe since 1989, in Japan since May 1995 and in
Australia since December 1995.

     The CRO industry derives substantially all of its revenue from the
pharmaceutical and biotechnology industries. In 1995, the global pharmaceutical
and biotechnology industries spent an estimated $33.0 billion on research and
development, of which the Company estimates $15.2 billion was spent on the type
of services offered by the Company. Of this amount, $2.6 billion was outsourced
to CROs. The Company believes that the following trends will cause the CRO
industry to continue to grow: (i) many pharmaceutical companies, in response to
margin pressures, are seeking to reduce the high fixed costs associated with
peak-load staffing for drug development by relying on a combination of internal
resources and CROs; (ii) pharmaceutical and biotechnology companies increasingly
are attempting to maximize profits from a given drug by pursuing regulatory
approvals in multiple countries in parallel, rather than sequentially, by
outsourcing to CROs with global capabilities; (iii) as consolidation in the
pharmaceutical industry continues, many pharmaceutical companies aggressively
manage costs by reducing jobs and outsourcing to variable-cost CRO's in an
effort to reduce the fixed costs associated with internal drug development; (iv)
as regulatory requirements in many jurisdictions have become more complex, the
pharmaceutical and biotechnology industries are increasingly outsourcing to
certain CROs to take advantage of their data management expertise and global
presence; 

                                       4
<PAGE>   6

(v) the worldwide research and development expenditures for new drugs, including
amounts spent on services of the type provided by CROs, have experienced
substantial growth in recent years as a result of pressures to develop new drugs
for an aging population and for the treatment of life threatening diseases and
chronic disorders; and (vi) the growth of the biotechnology industry has
increased the demand for expertise and services provided by outside sources,
including CROs. There can be no assurance, however, that these trends will
result in growth in the CRO industry.

     PAREXEL's objective is to maintain and enhance its position as a leading
CRO by providing a full range of clinical services on a global basis. The
Company addresses all aspects of clinical research and development with a
flexible approach that allows its clients to use the Company's services on an
individual or bundled basis. The Company believes its expertise in conducting
scientifically demanding trials and its ability to coordinate complicated global
trials are significant competitive strengths. PAREXEL continues to devote
significant resources developing information systems designed to allow the
Company to more effectively manage its business operations and deliver services
to its clients. The Company will continue to invest in improvements in
information technology and consider acquisitions of complementary businesses in
order to enhance its competitive position and its level of service.

     S&FA is a Washington, D.C. based provider of consulting services to the
healthcare and pharmaceutical industries. The acquisition of SF&A broadens the
Company's portfolio of consulting services, specifically in the area of health
economics. The Company, through S&FA, provides health economics services that
enable regulators, health care provides and third parties to assess the pricing
and cost effectiveness of new medical therapies. S&FA provides empirical
economic data and demonstration of cost effectiveness in development programs.
S&FA economists document critical economic advantages of the new drug design and
execute an integrated research program to support both regulatory approval and
post-approval pricing, marketing and reimbursement strategies, marketing
analyses and hotline services.

     The Company was incorporated in The Commonwealth of Massachusetts in 1983.
Unless the context otherwise requires, the terms "PAREXEL" and "the Company"
refer to PAREXEL International Corporation and its subsidiaries. The Company's
principal executive offices are located at 195 West Street, Waltham,
Massachusetts 02154, and its telephone number is (617) 487-9900.

                                  THE OFFERING

     This Prospectus relates to the resale of 330,652 shares of Common Stock of
the Company received by the Selling Stockholders on the closing of the
acquisition of all outstanding shares of capital stock of S&FA by the Company.
Such shares may be offered hereby from time to time by any or all of the Selling
Stockholders. The Company will not receive any of the proceeds from the resale
of the shares of Common Stock by the Selling Stockholders.


                                       5

<PAGE>   7




                                  RISK FACTORS

     In addition to the other information in this Prospectus, the following risk
factors should be considered carefully in evaluating the Company and its
business before purchasing the shares of Common Stock offered hereby.

LOSS OR DELAY OF LARGE CONTRACTS

     Most of the Company's contracts are terminable upon 60 to 90 days' notice
by the client. Clients terminate or delay contracts for a variety of reasons,
including, among others, the failure of products being tested to satisfy safety
requirements, unexpected or undesired clinical results of the product, the
client's decision to forego a particular study, insufficient patient enrollment
or investigator recruitment or production problems resulting in shortages of the
drug. In addition, the Company believes that several factors, including the
potential adverse impact of health care reform, have caused pharmaceutical
companies to apply more stringent criteria to the decision to proceed with
clinical trials and therefore may result in a greater willingness of these
companies to cancel contracts with CROs. The loss or delay of a large contract
or the loss or delay of multiple contracts could have a material adverse effect
on the Company.

VARIABILITY OF QUARTERLY OPERATING RESULTS

     The Company's quarterly operating results have been subject to variation,
and will continue to be subject to variation, depending upon factors such as the
initiation and progress of significant projects, exchange rate fluctuations, the
mix of services offered, the opening of new offices, the costs associated with
integrating acquisitions and the start-up costs incurred in connection with the
introduction of new products and services. In addition, during the third quarter
of fiscal 1993 and 1995, the Company's results of operations were affected by a
non-cash restructuring charge and a non-cash write-down due to the impairment of
long-lived assets, respectively. See "Risks Associated with Acquisitions."
Because a high percentage of the Company's operating costs are relatively fixed,
variations in the initiation, completion, delay or loss of contracts, or in the
progress of clinical trials can cause material adverse variations in quarterly
operating results.

DEPENDENCE ON CERTAIN INDUSTRIES AND CLIENTS

    The Company's revenues are highly dependent on research and development
expenditures by the pharmaceutical and biotechnology industries. The Company's
operations could be materially and adversely affected by general economic
downturns in its clients' industries, the impact of the current trend toward
consolidation in these industries or any decrease in research and development
expenditures. Furthermore, the Company has benefited to date from the increasing
tendency of pharmaceutical and biotechnology companies to outsource large
clinical research projects. A reversal or slowing of this trend would have a
material adverse effect on the Company.

     The Company believes that concentrations of business in the CRO industry
are not uncommon. The Company has experienced such concentration in the past and
may experience such concentration in 


                                       6

<PAGE>   8

future years. No client accounted for 10% or more of consolidated net revenue in
fiscal 1994, 1995 or 1996. In fiscal 1994, 1995 and 1996, the Company's top five
clients accounted for 29.8%, 25.2% and 32.0%, respectively, of the Company's
consolidated net revenue. The loss of business from a significant client could
have a material adverse effect on the Company.

DEPENDENCE ON GOVERNMENT REGULATION

     The Company's business depends on the comprehensive government regulation
of the drug development process. In the United States, the general trend has
been in the direction of continued or increased regulation, although the FDA
recently announced regulatory changes intended to streamline the approval
process for biotechnology products by applying the same standards as are in
effect for conventional drugs. In Europe, the general trend has been toward
coordination of common standards for clinical testing of new drugs, leading to
changes in the various requirements currently imposed by each country. Changes
in regulation, including a relaxation in regulatory requirements or the
introduction of simplified drug approval procedures, as well as anticipated
regulation, could materially and adversely affect the demand for the services
offered by the Company. In addition, failure on the part of the Company to
comply with applicable regulations could result in the termination of ongoing
research or the disqualification of data, either of which could have a material
adverse effect on the Company.

POTENTIAL ADVERSE IMPACT OF HEALTH CARE REFORM

     Numerous governments have recently undertaken efforts to control growing
health care costs through legislation, regulation and voluntary agreements with
medical care providers and pharmaceutical companies. In the last several years,
several comprehensive health care reform proposals were introduced in the U.S.
Congress. The intent of the proposals was, generally, to expand health care
coverage for the uninsured and reduce the growth of total health care
expenditures. While none of the proposals were adopted, health care reform may
again be addressed by the U.S. Congress. Implementation of government health
care reform may adversely affect research and development expenditures by
pharmaceutical and biotechnology companies, resulting in a decrease of the
business opportunities available to the Company. Management is unable to predict
the likelihood of health care reform proposals being enacted into law or the
effect such law would have on the Company.

     Many European governments have also undertaken health care reform. For
example, German health care reform legislation (the "Seehofer Gesetz"), which
was implemented on January 1, 1993, contributed to an estimated 15% decline in
German pharmaceutical industry sales in calendar 1993 and led several clients to
cancel contracts with the Company. Subsequent to these events, in the third
quarter of fiscal 1993, the Company restructured its German operations and
incurred a restructuring charge of approximately $3.3 million. In addition, in
the third quarter of fiscal 1995, the Company's results of operations were
affected by a non-cash write-down due to the impairment of long-lived assets of
PAREXEL GmbH, the Company's German subsidiary of approximately $11.3 million.
The Company cannot predict the impact that any pending or future health care
reform proposals may have on the Company's business in Europe.

                                       7

<PAGE>   9



COMPETITION; CRO INDUSTRY CONSOLIDATION

     The Company primarily competes against in-house departments of
pharmaceutical companies, full service CROs and, to a lesser extent,
universities and teaching hospitals. Some of these competitors have
substantially greater capital, technical and other resources than the Company.
CROs generally compete on the basis of previous experience, medical and
scientific expertise in specific therapeutic areas, the quality of contract
research, the ability to organize and manage large-scale trials on a global
basis, the ability to manage large and complex medical databases, the ability to
provide statistical and regulatory services, the ability to recruit
investigators, the ability to integrate information technology with systems to
improve the efficiency of contract research, an international presence with
strategically located facilities, financial viability and price. There can be no
assurance that the Company will be able to compete favorably in these areas.

     The CRO industry is highly fragmented, with participants ranging from
several hundred small, limited-service providers to several large, full-service
CROs with global operations. The trend toward CRO industry consolidation has
resulted in heightened competition among the larger CROs for clients and
acquisition candidates. In addition, consolidation within the pharmaceutical
industry as well as a trend by pharmaceutical companies of outsourcing among
fewer CROs has led to heightened competition for CRO contracts.

MANAGEMENT OF BUSINESS EXPANSION; NEED FOR IMPROVED SYSTEMS; ASSIMILATION OF
FOREIGN OPERATIONS

     The Company's business and operations have experienced substantial
expansion over the past 10 years. The Company believes that such expansion
places a strain on operational, human and financial resources. In order to
manage such expansion, the Company must continue to improve its operating,
administrative and information systems, accurately predict its future personnel
and resource needs to meet client contract commitments, track the progress of
ongoing client projects and attract and retain qualified management,
professional, scientific and technical operating personnel. Expansion of foreign
operations also may involve the additional risks of assimilating differences in
foreign business practices, hiring and retaining qualified personnel, and
overcoming language barriers. In the event that the operation of an acquired
business does not live up to expectations, the Company may be required to
restructure the acquired business or write-off the value of some or all of the
assets of the acquired business. In fiscal 1993 and 1995, the Company's results
of operations were materially and adversed affected by write-offs associated
with the Company's acquired German operations. Failure by the Company to meet
the demands of and to manage expansion of its business and operations could have
a material adverse effect on the Company's business.

RISKS ASSOCIATED WITH ACQUISITIONS

     The Company has made a number of acquisitions, including four since June 1,
1996, and will continue to review future acquisition opportunities. No
assurances can be given that acquisition candidates will continue to be
available on terms and conditions acceptable to the Company. Acquisitions
involve numerous risks, including, among other things, difficulties and expenses
incurred in connection with the acquisitions and the subsequent assimilation of
the operations and services or

                                       8


<PAGE>   10

products of the acquired companies, the difficulty of operating new (albeit
related) businesses, the diversion of management's attention from other business
concerns and the potential loss of key employees of the acquired company.
Acquisitions of foreign companies also may involve the additional risks of
assimilating differences in foreign business practices and overcoming language
barriers. In the event that the operations of an acquired business do not live
up to expectations, the Company may be required to restructure the acquired
business or write-off the value of some or all of the assets of the acquired
business. In fiscal 1993 and 1995, the Company's results of operations were
materially and adversely affected by write-offs associated with the Company's
acquired German operations. There can be no assurance that any acquisition will
be successfully integrated into the Company's operations.

DEPENDENCE ON PERSONNEL

     The Company relies on a number of key executives, including Josef H. von
Rickenbach, its President, Chief Executive Officer and Chairman, upon whom the
Company maintains key man life insurance. Although the Company has entered into
agreements containing non-competition restrictions with its senior officers, the
Company does not have employment agreements with most of these persons and the
loss of the services of any of the Company's key executives could have a
material adverse effect on the Company. The Company's performance also depends
on its ability to attract and retain qualified professional, scientific and
technical operating staff. The level of competition among employers for skilled
personnel, particularly those with M.D., Ph.D. or equivalent degrees, is high.
There can be no assurance the Company will be able to continue to attract and
retain qualified staff. In addition, the cost of recruiting skilled personnel
has increased and there can be no assurance that such costs will not continue to
rise.

POTENTIAL LIABILITY; POSSIBLE INSUFFICIENCY OF INSURANCE

     Clinical research services involve the testing of new drugs on human
volunteers pursuant to a study protocol. Such testing involves a risk of
liability for personal injury or death to patients due to, among other reasons,
possible unforeseen adverse side effects or improper administration of the new
drug. Many of these patients are already seriously ill and are at risk of
further illness or death. The Company could be materially and adversely affected
if it were required to pay damages or incur defense costs in connection with a
claim that is outside the scope of an indemnity or insurance coverage, or if the
indemnity, although applicable, is not performed in accordance with its terms or
if the Company's liability exceeds the amount of applicable insurance. In
addition, there can be no assurance that such insurance will continue to be
available on terms acceptable to the Company.

ADVERSE EFFECT OF EXCHANGE RATE FLUCTUATIONS

         Approximately 36.0%, 40.2%, 38.4% and 33.8% of the Company's net
revenue for fiscal 1994, 1995 and 1996 and the three months ended September 30,
1996, respectively, were derived from the Company's operations outside of North
America. Since the revenue and expenses of the Company's foreign operations are
generally denominated in local currencies, exchange rate fluctuations between
local currencies and the United States dollar will subject the Company to
currency translation risk with respect to the results of its foreign operations.
To the extent the Company is unable to shift to its clients the effects of
currency fluctuations, these fluctuations could have a material adverse effect
on the 

                                       9

<PAGE>   11

Company's results of operations. The Company does not currently hedge against
the risk of exchange rate fluctuations.

VOLATILITY OF STOCK PRICE

     The market price of the Company's Common Stock is subject to wide
fluctuations in response to quarter-to-quarter variations in operating results,
changes in earnings estimates by analysts, market conditions in the industry,
prospects of health care reform, changes in government regulation and general
economic conditions. In addition, the stock market has from time to time
experienced significant price and volume fluctuations that have been unrelated
to the operating performance of particular companies. These market fluctuations
may adversely affect the market price of the Company's Common Stock. Because the
Company's Common Stock currently trades at a relatively high price-earnings
multiple, due in part to analysts' expectations of continued earnings growth,
even a relatively small shortfall in earnings from, or a change in, analysts'
expectations may cause an immediate and substantial decline in the Company's
stock price. Investors in the Company's Common Stock must be willing to bear the
risk of such fluctuations in earnings and stock price.

ANTI-TAKEOVER PROVISIONS; POSSIBLE ISSUANCE OF PREFERRED STOCK

     The Company's Restated Articles of Organization and Restated By-Laws
contain provisions that may make it more difficult for a third party to acquire,
or may discourage a third party from acquiring, the Company. These provisions
could limit the price that certain investors might be willing to pay in the
future for shares of the Company's Common Stock. In addition, shares of the
Company's Preferred Stock may be issued in the future without further
stockholder approval and upon such terms and conditions, and having such rights,
privileges and preferences, as the Board of Directors may determine. The rights
of the holders of Common Stock will be subject to, and may be adversely affected
by, the rights of any holders of Preferred Stock that may be issued in the
future. The issuance of Preferred Stock, while providing desirable flexibility
in connection with possible acquisitions and other corporate purposes, could
adversely affect the market price of the Common Stock and could have the effect
of making it more difficult for a third party to acquire, or discouraging a
third party from acquiring, a majority of the outstanding voting stock of the
Company. The Company has no present plans to issue any shares of Preferred
Stock. See "Description of Capital Stock."

                                      10
<PAGE>   12



                                 USE OF PROCEEDS

     The Company will not receive any proceeds from the resale of shares of
Common Stock by the Selling Stockholders hereunder. See "Selling Stockholders"
and "Plan of Distribution."

     The principal purpose of this offering is to effect an orderly disposition
of the Selling Stockholders' shares.

                 PRICE RANGE OF COMMON STOCK AND DIVIDEND POLICY
<TABLE>

     The Company's Common Stock is quoted on the Nasdaq National Market under
the symbol "PRXL." Public trading of the Common Stock commenced on November 22,
1995. Prior to that time, there was no public market for the Company's Common
Stock. The following table sets forth the high and low sale prices for the
Common Stock as reported by Nasdaq for the periods indicated:

<CAPTION>
                                                    HIGH          LOW
                                                    ----          ---
<S>                                                 <C>          <C>    
FISCAL YEAR ENDED JUNE 30, 1996:
  Second quarter (from November 22, 1995) ....      $36          $18 3/4
  Third quarter ..............................       44 1/2       26
  Fourth quarter .............................       55 3/4       37 1/2

FISCAL YEAR ENDED JUNE 30, 1997:
  First quarter ..............................      $63          $31
  Second quarter .............................       63 3/4       45 3/4
  Third quarter (through January 13, 1997) ...       51 1/4       46 3/4

</TABLE>

     On January 13, 1997, the last reported sale price of the Common Stock on
the Nasdaq National market, was $48 1/4 per share. As of January 13, 1997, there
were approximately 67 stockholders of record of the Common Stock. The Company
believes that most of its stock (other than shares held by its officers and
directors) is held in street names through one or more nominees.

     In November 1995, in connection with its initial public offering, the
Company paid a cash dividend of approximately $940,000 on certain series of its
Preferred Stock, which were subsequently converted into Common Stock. The
Company has never paid or declared any dividends on its Common Stock and does
not anticipate paying any cash dividends in the foreseeable future. The Company
currently intends to retain future earnings to fund the development and growth
of its business.

                                       11

<PAGE>   13

                              SELLING STOCKHOLDERS
<TABLE>

     The Shares are to be offered by and for the respective accounts of the
Selling Stockholders. The number of Shares which each Selling Stockholder may
offer is as follows:
<CAPTION>

                                   SHARES                      SHARES OFFERED
                                   ------                      --------------
                                   OWNED                      PURSUANT TO THIS                SHARES OWNED AFTER
                                   -----                      ----------------                ------------------
                              BEFORE OFFERING                    PROSPECTUS                       OFFERING(2)
                              ---------------                    ----------                       -----------

SELLING STOCKHOLDERS      NUMBER        PERCENT (1)         NUMBER        PERCENT (1)       NUMBER        PERCENT (1)
- --------------------      ------        -----------         ------        -----------       ------        -----------
 <S>                      <C>               <C>             <C>               <C>             <C>              <C>
 Martin J. Miller         216,468           2.2             216,468           2.2             0                *
 Howard M. Tag             21,052            *               21,052            *              0                * 
 Peter B. Malamis           2,874            *                2,874            *              0                *
 Laurie G. Hughes           1,663            *                1,663            *              0                *
 Robert F. Raven           88,595            *               88,595            *              0                *
                          -------------------------------------------------------------------------------------------
         TOTAL            330,652                           330,652                           0
                          -------------------------------------------------------------------------------------------
- ----------------------
<FN>
*Less than 1% of the outstanding Common Stock.
(1)  As of January 13, 1997, there were 9,719,484 shares of Common Stock outstanding.
(2)  Assuming all shares offered pursuant to this Prospectus are sold.
</TABLE>

     None of the Selling Stockholders has had any material relationship with the
Company or any of its affiliates within the past three years except as described
below.

     All of the Selling Stockholders acquired their shares in connection with
the sale of all the outstanding capital stock of State and Federal Associates,
Inc. ("S&FA") to the Company pursuant to a Purchase Agreement (the "Purchase
Agreement") dated August 22, 1996. Approximately 38,528 of the shares of Common
Stock issued pursuant to the Purchase Agreement have been placed in escrow until
the earlier of (i) August 22, 1997 or (ii) the issuance of the audit report
relating to the Company's financial statements for the fiscal year ended June
30, 1997. The shares that have been placed in escrow will be used to satisfy any
indemnification claims brought by the Company based on a breach of any of the
representations or warranties of S&FA or the Selling Stockholders set forth in
the Purchase Agreement. Martin J. Miller was a Director, Chairman of the Board
and President; Howard M. Tag was Vice President, Secretary and a Director and
Peter B. Malamis was a Director of S&FA until they each resigned such positions
on August 22, 1996. Mr. Miller, Mr. Tag, Mr. Malamis and Ms. Hughes continue to
be employees of S&FA. Pursuant to a Registration Rights Agreement (the
"Registration Rights Agreement") dated August 22, 1996, the Company has agreed
to bear all expenses in connection with the registration and resale of the
Shares (other than underwriting discounts and selling commissions and the fees
and expenses of counsel and other advisors to the Selling Stockholders). See
"Plan of Distribution."

     Each Selling Stockholder represented in the Registration Rights Agreement
that he or she was purchasing the Shares from the Company without any present
intention of effecting a distribution of those Shares. In recognition of the
fact, however, that investors may want to be able to resell their shares

                                       12


<PAGE>   14

when they consider appropriate, the Company has filed with the Commission a
Registration Statement on Form S-3 (of which this Prospectus is a part) with
respect to the of the Shares by the Selling Stockholders from time to time. In
addition, in connection with the public offering of Common Stock by the Company
in December 1996, each Selling Stockholder, with the exception of Mr. Raven,
agreed not to sell or otherwise transfer any shares of Common Stock of the
Company owned by such Selling Stockholders until March 6, 1997. The Company will
prepare and file such amendments and supplements to the Registration Statement
as may be necessary to keep it effective until the earlier of the resale of all
Shares pursuant to the Registration Statement or August 22, 1999.

     The Registration Rights Agreement entered into by the Company and the
Selling Stockholders provides that the Company will indemnify the Selling
Stockholders for any losses incurred by them in connection with actions arising
from any untrue statement of a material fact in the Registration Statement or
any omission of a material fact required to be stated therein, unless such
statement or omission was made in reliance upon written information furnished to
the Company by the Selling Stockholders. Similarly, the Registration Rights
Agreement provides that each Selling Stockholder will indemnify the Company and
its officers and directors for any losses incurred by them in connection with
any action arising from any untrue statement of material fact in the
Registration Statement or any omission of a material fact required to be stated
therein, if such statement or omission was made in reliance on written
information furnished to the Company by such Selling Stockholders.

                                       13

<PAGE>   15



                          DESCRIPTION OF CAPITAL STOCK

     The current authorized capital stock of the Company is 50,000,000 shares of
Common Stock, par value $.01 per share, and 5,000,000 shares of Preferred Stock,
par value $.01 per share.

COMMON STOCK

     As of January 13, 1997, there were 9,719,484 shares of Common Stock
outstanding and held of record by 67 stockholders.

     Holders of Common Stock are entitled to one vote for each share held on all
matters submitted to a vote of stockholders. Holders of Common Stock do not have
cumulative voting rights. Accordingly, holders of a majority of the shares of
Common Stock entitled to vote in any election of directors may elect all of the
directors standing for election. Holders of Common Stock are entitled to receive
ratably such dividends, if any, as may be declared by the Board of Directors out
of funds legally available therefor, subject to any preferential dividend rights
of any outstanding Preferred Stock. Upon the liquidation, dissolution or winding
up of the Company, the holders of Common Stock are entitled to receive ratably
the net assets of the Company available after the payment of all debts and other
liabilities and subject to the prior rights of any outstanding Preferred Stock.
Holders of the Common Stock have no preemptive, subscription, redemption or
conversion rights. The outstanding shares of Common Stock are, and the shares
offered by the Company in this offering will be, when issued and paid for, fully
paid and nonassessable. The rights, preferences and privileges of holders of
Common Stock are subject to, and may be adversely affected by, the rights of the
holders of shares of any series of Preferred Stock which the Company may
designate and issue in the future. There are no shares of Preferred Stock
outstanding.

PREFERRED STOCK

     The Board of Directors is authorized, subject to certain limitations
prescribed by law, without further stockholder approval, to issue from time to
time up to an aggregate of 5,000,000 shares of Preferred Stock in one or more
series and to fix or alter the designations, preferences, rights and any
qualifications, limitations or restrictions of the shares of each such series
thereof, including the dividend rights, dividend rates, conversion rights,
voting rights, terms of redemption (including sinking fund provisions),
redemption price or prices, liquidation preferences and the number of shares
constituting any series or designations of such series. The issuance of
Preferred Stock may have the effect of delaying, deferring or preventing a
change of control of the Company. The Company has no present plans to issue any
shares of Preferred Stock.

MASSACHUSETTS LAW AND CERTAIN PROVISIONS OF THE COMPANY'S RESTATED ARTICLES OF
ORGANIZATION AND BY-LAWS

     The Company believes that it has more than 200 beneficial stockholders,
thus making it subject to Chapter 110F of the Massachusetts General Laws, an
anti-takeover law. In general, this statute prohibits a publicly held
Massachusetts corporation from engaging in a "business combination" with an
"interested stockholder" for a period of three years after the date of the
transaction in which the person

                                       14


<PAGE>   16

becomes an interested stockholder, unless (i) the interested stockholder obtains
the approval of the board of directors prior to becoming an interested
stockholder, (ii) the interested stockholder acquires 90% of the outstanding
voting stock of the corporation (excluding shares held by certain affiliates of
the corporation) at the time it becomes an interested stockholder, or (iii) the
business combination is approved by both the board of directors and the holders
of two-thirds of the outstanding voting stock of the corporation (excluding
shares held by the interested stockholder). An "interested stockholder" is a
person who, together with its affiliates and associates, owns (or at any time
within the prior three years did own) 5% or more of the outstanding voting stock
of the corporation. A "business combination" includes a merger, a stock or asset
sale, and certain other transactions resulting in a financial benefit to the
interested stockholder. The Company may at any time elect not to be governed by
Chapter 110F by vote of a majority of its stockholders, but such an amendment
would not be effective for twelve months and would not apply to a business
combination with any person who became an interested stockholder prior to the
adoption of the amendment.

     The Massachusetts Business Corporation Law generally requires that
publicly-held Massachusetts corporations have a classified board of directors
consisting of three classes as nearly equal in size as possible, unless those
corporations elect to opt out of the statute's coverage. By vote of the Board of
Directors, the Company has elected to opt out of the classified board provisions
of this statute and has adopted separate classified Board provisions in its
Restated Articles of Organization.

     The Company's By-Laws include a provision that excludes the Company from
the applicability of Massachusetts General Laws Chapter 110D, entitled
"Regulation of Control Share Acquisitions." In general, this statute provides
that any stockholder of a corporation subject to this statute who acquires 20%
or more of the outstanding voting stock of a corporation may not vote such stock
unless the stockholders of the corporation so authorize. The Board of Directors
may amend the Company's By-Laws at any time to subject the Company to this
statute prospectively.

     The Company's By-Laws require that nominations for the Board of Directors
made by a stockholder comply with certain notice procedures. A notice by a
stockholder of a planned nomination must be given not less than 60 and not more
than 90 days prior to a scheduled meeting, provided that if less than 70 days'
notice is given of the date of the meeting, a stockholder will have ten days
within which to give such notice. The stockholder's notice of nomination must
include particular information about the stockholder, the nominee and any
beneficial owner on whose behalf the nomination is made. The Company may require
any proposed nominee to provide such additional information as is reasonably
required to determine the eligibility of the proposed nominee.

     The By-Laws also require that a stockholder seeking to have any business
conducted at a meeting of stockholders give notice to the Company not less than
60 and not more than 90 days prior to the scheduled meeting, provided that if
less than 70 days' notice is given of the date of the meeting, a stockholder
will have ten days within which to give such notice. The notice from the
stockholder must describe the proposed business to be brought before the meeting
and include information about the stockholder making the proposal, any
beneficial owner on whose behalf the proposal is made, and any other stockholder
known to be supporting the proposal. The By-Laws require the Company to call a

                                       15

<PAGE>   17

special stockholders' meeting at the request of stockholders holding at least 33
1/3% of the voting power of the Company.

     The Company's Restated Articles of Organization include provisions
eliminating the personal liability of the Company's directors for monetary
damages resulting from breaches of their fiduciary duty to the extent permitted
by the Massachusetts Business Corporation Law. Additionally, the Company's
Restated Articles of Organization provide that the Company shall indemnify each
person who is or was a director or officer of the Company, and each person who
is or was serving or has agreed to serve at the request of the Company as a
director or officer of, or in a similar capacity with, another organization or
in any capacity with respect to any employee benefit plan of the Company,
against all liabilities, costs and expenses reasonably incurred by any such
persons in connection with the defense or disposition of or otherwise in
connection with or resulting from any action, suit or other proceeding in which
they may be involved by reason of being or having been such a director or
officer, or by reason of any action taken or not taken in such capacity, except
with respect to any matter as to which such person shall have been finally
adjudicated by a court of competent jurisdiction not to have acted in good faith
in the reasonable belief that his or her action was in the best interests of the
Company or, to the extent such matter relates to service with respect to an
employee benefit plan, in the best interests of the participants or
beneficiaries of such employee benefit plan.

     The Restated Articles of Organization provide that certain transactions,
such as the sale, lease or exchange of all or substantially all of the Company's
property and assets and the merger or consolidation of the Company into or with
any other corporation, may be authorized by the approval of the holders of a
majority of the shares of each class of stock entitled to vote thereon, rather
than by two-thirds as otherwise provided by statute, provided that the
transactions have been authorized by a majority of the members of the Board of
Directors and the requirements of any other applicable provisions of the
Restated Articles of Organization have been met.

     Certain of the provisions of the Restated Articles of Organization and
By-Laws discussed above would discourage or make more difficult a proxy contest
or the assumption of control by a holder of a substantial block of the Company's
stock. Such provisions could also have the effect of discouraging a third party
from making a tender offer or otherwise attempting to obtain control of the
Company, even though such an attempt might be beneficial to the Company and its
stockholders. In addition, since the Restated Articles of Organization and
By-Laws are designed to discourage accumulations of large blocks of the
Company's stock by purchasers whose objective is to have stock repurchased by
the Company at a premium, such provisions could tend to reduce the temporary
fluctuations in the market price of the Company's stock which are caused by such
accumulations. Accordingly, stockholders could be deprived of certain
opportunities to sell their stock at a temporarily higher market price.

TRANSFER AGENT AND REGISTRAR

     The Transfer Agent and Registrar for the Common Stock is The First National
Bank of Boston.

                                       16

<PAGE>   18



                              PLAN OF DISTRIBUTION

     The Shares offered hereby may be resold from time to time by the Selling
Stockholders for their own accounts. The Company will receive none of the
proceeds from this offering. The Selling Stockholders will pay or assume
brokerage commissions or other charges and expenses incurred in the resale of
the Shares.

     The distribution of the Shares by the Selling Stockholders is not subject
to any underwriting agreement. The Shares covered by this Prospectus may be sold
by the Selling Stockholders or by pledgees, donees, transferees or other
successors in interest. The Shares offered by the Selling Stockholders may be
sold from time to time at market prices prevailing at the time of sale, at
prices relating to such prevailing market prices or at negotiated prices. In
addition, the Selling Stockholders may resell their Shares covered by this
Prospectus through customary brokerage channels, either through broker-dealers
acting as agents or brokers, or through broker-dealers acting as principals, who
may then resell the Shares, or at private sale or otherwise, at market prices
prevailing at the time of sale, at prices related to such prevailing market
prices or at negotiated prices. The Selling Stockholders may effect such
transactions by selling Shares to or through broker-dealers, and such
broker-dealers may receive compensation in the form of underwriting discounts,
concessions, commissions, or fees from the Selling Stockholders and/or
purchasers of the Shares for whom such broker-dealers may act as agent or to
whom they sell as principal, or both (which compensation to a particular
broker-dealer might be in excess of customary commissions). Any broker dealers
that participate with the Selling Stockholders in the distribution of Shares may
be deemed to be underwriters and any commissions received by them and any profit
on the resale of Shares positioned by them might be deemed to be underwriting
discounts and commissions within the meaning of the Securities Act, in
connection with such resaless.

     The Company will inform the Selling Stockholders that the antimanipulation
rules under the Securities Exchange Act of 1934 (Rule 10b-5 and 10-6) may apply
to sales in the market and will furnish the Selling Stockholders upon request
with a copy of these Rules. The Company will also inform the Selling
Stockholders of the need for delivery of copies of this Prospectus.

     Any shares covered by the Prospectus that qualify for resale pursuant to
Rule 144 under the Securities Act may be sold under Rule 144 rather than
pursuant to this Prospectus.

     The Common Stock is quoted on the Nasdaq National Market under the symbol
"PRXL."

                                       17


<PAGE>   19



                                  LEGAL MATTERS

     The validity of the shares of Common Stock offered hereby will be passed
upon for the Company and the Selling Stockholders by Testa, Hurwitz & Thibeault,
LLP, Boston, Massachusetts.

                                     EXPERTS

     The financial statements incorporated in this Prospectus by reference to
the Annual Report on Form 10-K of PAREXEL International Corporation for the year
ended June 30, 1996, have been so incorporated in reliance on the report of
Price Waterhouse LLP, independent accountants, given on the authority of said
firm as experts in auditing and accounting.

                                       18
<PAGE>   20





================================================================================

No dealer, sales representative or any other person has been authorized to give
any information or to make any representations in connection with this offering
other than those contained in this prospectus, and, if given or made, such
information or representations must not be relied upon as having been authorized
by the company, any of the selling stockholders or any of the underwriters. This
prospectus does not constitute an offer to sell, or a solicitation of an offer
to buy, any securities other than the registered securities to which it relates
or an offer to, or a solicitation of, any person in any jurisdiction where such
offer or solicitation would be unlawful. Neither the delivery of this prospectus
nor any sale made hereunder shall, under any circumstances, create any
implication that there has been no change in the affairs of the company since
the date hereof or that the information contained herein is correct as of any
time subsequent to the date hereof.

                            -------------------------

                                TABLE OF CONTENTS


                                                   PAGE
                                                   ----

Available Information.........................      2
Incorporation of Certain Information
 by Reference.................................      3
The Company...................................      4
Risk Factors..................................      6
Use of Proceeds...............................     11
Price Range of Common Stock
 and Dividend Policy..........................     11
Selling Stockholders..........................     12
Description of Capital Stock..................     14
Plan of Distribution..........................     17
Legal Matters.................................     18
Experts.......................................     18

================================================================================

================================================================================




                                 330,652 Shares


                        PAREXEL International Corporation




                                  Common Stock








                             -----------------------

                                   PROSPECTUS


                                     , 1997

                            ------------------------












================================================================================


<PAGE>   21



                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.
<TABLE>

     Estimated expenses (other than underwriting discounts and commissions)
payable in connection with the sale of the Common Stock offered hereby are as
follows:

<S>                                                                   <C>
Registration fee...................................................   $ 4,840.55
Legal fees and expenses............................................    20,000.00
Accounting fees and expenses.......................................     5,000.00  
                                                                      ----------
     Total.........................................................   $29,840.55
                                                                      ==========
</TABLE>

     The Company will bear all expenses shown above.

ITEM 15. INDEMNIFICATION OF DIRECTORS AND OFFICERS.

     Article 6 of the Company's Restated Articles of Organization provides that
the Company shall indemnify each person who is or was a director or officer of
the Company, and each person who is or was serving or has agreed to serve at the
request of the Company as a director or officer of, or in a similar capacity
with, another organization against all liabilities, costs and expenses
reasonably incurred by any such persons in connection with the defense or
disposition of or otherwise in connection with or resulting from any action,
suit or other proceeding in which they may be involved by reason of being or
having been such a director or officer or by reason of any action taken or not
taken in such capacity, except with respect to any matter as to which such
person shall have been finally adjudicated by a court of competent jurisdiction
not to have acted in good faith in the reasonable belief that his or her action
was in the best interests of the Company. Section 67 of Chapter 156B of the
Massachusetts Business Corporation Law authorizes a corporation to indemnify its
directors, officers, employees and other agents unless such person shall have
been adjudicated in any proceeding not to have acted in good faith in the
reasonable belief that such action was in the best interests of the corporation.

     Reference is hereby made to Section 9 of the Registration Rights Agreement
among the Company and the Selling Stockholders, filed as Exhibit 4.3 of this
Registration Statement, for a description of indemnification arrangements
between the Company and the Selling Stockholders, pursuant to which the Selling
Stockholders are obligated, under certain circumstances, to indemnify directors,
officers and controlling persons of the Company against certain liabilities,
including liabilities under the Securities Act of 1933, as amended (the "Act").

                                      II-1
<PAGE>   22



ITEM 16. EXHIBITS.

     Exhibits:

          4.1  Specimen certificate representing the Common Stock (filed as
               Exhibit 4.1 to Registrant's Registration Statement on Form S-1
               (File No. 33-97406) and incorporated herein by reference).

          4.2  Purchase Agreement dated as of August 22, 1996 between the
               Company, State and Federal Associates, Inc., S&FA of Alexandria
               Partnership, Martin J. Miller, Howard Tag, Peter Malamis and
               Laurie Hughes.

          4.3  Registration Rights Agreement dated as of August 22, 1996 between
               the Company, Martin J. Miller, Robert F. Raven, Howard Tag, Peter
               Malamis, Laurie Hughes and S&FA of Alexandria Partnership.

          5.1  Opinion of Testa, Hurwitz & Thibeault, LLP.

          23.1 Consent of Price Waterhouse LLP.

          23.2 Consent of Testa, Hurwitz & Thibeault, LLP (included in Exhibit
               5.1).

          24.1 Power of Attorney (included as part of the signature page to this
               Registration Statement).


                                      II-2
<PAGE>   23



ITEM 17.  UNDERTAKINGS.

 The undersigned Registrant hereby undertakes:

(a)(1) To file, during any period in which offers or sales are being made, a
       post-effective amendment to this Registration Statement:

       (i) To include any prospectus required by Section 10(a)(3) of the
       Securities Act of 1933;

       (ii) To reflect in the prospectus any facts or events arising after the
       effective date of the registration statement (or the most recent
       post-effective amendment thereof) which, individually or in the 
       aggregate, represent a fundamental change in the information set forth 
       in the registration statement.

       (iii) To include any material information with respect to the plan of
       distribution not previously disclosed in the Registration Statement or 
       any material change to such information in this Registration Statement.

  (2)  That, for the purpose of determining any liability under the Securities
       Act of 1933, each such post-effective amendment shall be deemed to be a
       new registration statement relating to the securities offered therein, 
       and the offering of such securities at that time shall be deemed to be 
       the initial bona fide offering thereof.

  (3)  To remove from registration by means of a post-effective amendment any of
       the securities being registered which remain unsold at the termination of
       the offering.

(b) For the purpose of determining any liability under the Securities Act of
    1933, the information omitted from the form of prospectus filed as part of
    this registration statement in reliance upon Rule 430A and contained in a
    form of prospectus filed by the registrant pursuant to Rule 424(b)(1) or (4)
    or 497(h) under the Securities Act shall be deemed to be part of this
    registration statement as of the time it was declared effective.

The undersigned registrant hereby undertakes that, for purposes of determining
any liability under the Securities Act of 1933, each filing of the registrant's
annual report pursuant to Section 13(a) or 15(d) of the Securities Exchange Act
of 1934 (and, where applicable, each filing of an employee benefit plan's annual
report pursuant to Section 15(d) of the Securities Exchange Act of 1934) that is
incorporated by reference in the registration statement shall be deemed to be a
new registration statement relating to the securities offered therein, and other
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

Insofar as indemnification for liabilities arising under the Securities Act of
1933 may be permitted to directors, officers and controlling persons of the
registrant pursuant to the foregoing provisions, or otherwise, the registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Act, and is,
therefore, unenforceable. In the event that a claim for indemnification against
such liabilities (other than the payment by the registrant of expenses incurred
or paid by a director, officer or controlling person of the registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.

                                      II-3

<PAGE>   24




                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933 , as amended,
the Registrant certifies that it has reasonable grounds to believe that it meets
all the requirements for filing on Form S-3 and has duly caused this
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Waltham, Massachusetts, on the 14th day of
January, 1997.

                                       PAREXEL INTERNATIONAL CORPORATION

                                       By: /s/ Josef H. von Rickenbach
                                           -----------------------------  
                                         Josef H. von Rickenbach
                                         President, Chief Executive Officer
                                         and Chairman

                        POWER OF ATTORNEY AND SIGNATURES

     We, the undersigned officers and directors of PAREXEL International
Corporation, hereby severally constitute and appoint Josef H. von Rickenbach,
William T. Sobo, Jr. and William J. Schnoor, Jr., and each of them singly, as
true and lawful attorneys, with full power to them and each of them singly, to
sign for us in our names in the capacities indicated below, the Registration
Statement on Form S-3 filed herewith, any registration statement relating to
this offering that is to be effective upon filing pursuant to Rule 462(b) under
the Securities Act of 1933, as amended, (a "Rule 462(b) Registration Statement")
and any and all pre-effective and post-effective amendments to said Registration
Statement on Form S-3 or Rule 462(b) Registration Statement, and generally to do
all things in our names and on our behalf in such capacities to enable PAREXEL
International Corporation to comply with the provisions of the Securities Act of
1933, as amended, and all requirements of the Securities and Exchange
Commission.
<TABLE>

     Pursuant to the requirements of the Securities Act of 1933, as amended,
this registration statement has been signed by the following persons in the
capacities and on the dates indicated.
<CAPTION>

                    SIGNATURES                                   TITLE(S)                            DATE
                    ----------                                   --------                            ----

<S>                                                 <C>                                        <C> 
/s/ Josef H. von Rickenbach                         President, Chief Executive                 January 14, 1997
- -------------------------------------------------   Officer and Chairman (principal
Josef H. von Rickenbach                             executive officer)
                                                    

/s/ William T. Sobo, Jr.                            Vice President and Treasurer               January 14, 1997
- -------------------------------------------------   (principal financial and
William T. Sobo, Jr.                                accounting officer)
                                                    


/s/ A.Dana Callow, Jr.                              Director                                   January 14, 1997
- -------------------------------------------------
A. Dana Callow, Jr.

</TABLE>

                                      II-4

<PAGE>   25

<TABLE>
<S>                                                 <C>                                        <C> 
/s/ Patrick J. Fortune                              Director                                   January 14, 1997
- -------------------------------------------------
Patrick J. Fortune


/s/ Werner M. Herrmann                              Director                                   January 14, 1997
- -------------------------------------------------
Werner M. Herrmann


/s/ Peter Barton Hutt                               Director                                   January 14, 1997
- -------------------------------------------------
Peter Barton Hutt


/s/ James A. Saalfield                              Director                                   January 14, 1997
- -------------------------------------------------
James A. Saalfield

</TABLE>
                                      II-5
<PAGE>   26


<TABLE>

                                  EXHIBIT INDEX
<CAPTION>

   Exhibit No.        Description of Exhibit                                                   
- ------------------    -------------------------------------------------------------------    

          <S>         <C>                                                                           
          4.1         Specimen  certificate  representing  the  Common  Stock  (filed as
                      Exhibit 4.1 to  Registrant's  Registration  Statement  on Form S-1
                      (File No. 33-97406) and incorporated herein by reference.)

          4.2         Purchase  Agreement  dated  as of  August  22,  1996  between  the
                      Company,  State and Federal  Associates,  Inc., S&FA of Alexandria
                      Partnership,  Martin J.  Miller,  Howard  Tag,  Peter  Malamis and
                      Laurie Hughes.

          4.3         Registration  Rights Agreement dated as of August 22, 1996 between
                      the Company,  Martin J. Miller, Robert F. Raven, Howard Tag, Peter
                      Malamis, Laurie Hughes and S&FA of Alexandria Partnership.
 
          5.1         Opinion of Testa, Hurwitz & Thibeault, LLP.

         23.1         Consent of Price Waterhouse LLP.

         23.2         Consent of Testa,  Hurwitz & Thibeault,  LLP  (included in 
                      Exhibit 5.1).

         24.1         Power of Attorney  (included as part of the signature page to this
                      Registration Statement).

</TABLE>



<PAGE>   1
                                                                    EXHIBIT 4.2
                                                                    -----------


             ------------------------------------------------------

                               PURCHASE AGREEMENT

                                      AMONG

                       STATE AND FEDERAL ASSOCIATES, INC.,

             THE STOCKHOLDERS LISTED ON THE SIGNATURE PAGES HERETO,

                         S&FA OF ALEXANDRIA PARTNERSHIP
                                       AND
                        PAREXEL INTERNATIONAL CORPORATION

                           Dated as of August 22, 1996

             ------------------------------------------------------


<PAGE>   2


                                TABLE OF CONTENTS

                                                                            PAGE
                                                                            ----

ARTICLE I -- DEFINITIONS......................................................1

   1.01.  Definitions.........................................................1

ARTICLE II -- PURCHASE AND SALE...............................................6

   2.01.  Purchase and Sale...................................................6
   2.02.  Closing.............................................................6

ARTICLE III --  REPRESENTATIONS AND WARRANTIES OF THE COMPANY,
                SELLERS AND THE PARTNERSHIP...................................7

   3.01.  Corporate Existence and Power.......................................8
   3.02.  Corporate Authorization.............................................8
   3.03.  Governmental Authorization; Consents................................8
   3.04.  Non-Contravention...................................................8
   3.05.  Capitalization......................................................9
   3.06.  Subsidiaries........................................................9
   3.07.  Financial Statements................................................9
   3.08.  Absence of Certain Changes.........................................10
   3.09.  Property and Equipment.............................................11
   3.10.  No Undisclosed Material Liabilities................................13
   3.11.  Litigation.........................................................14
   3.12.  Material Contracts.................................................14
   3.13.  Insurance Coverage.................................................15
   3.14.  Compliance with Laws; No Defaults..................................15
   3.15.  Finders, Fees......................................................16
   3.16.  Intellectual Property..............................................16
   3.17.  Inventories........................................................17
   3.18.  Receivables........................................................17
   3.19.  Taxes..............................................................18
   3.20.  Employees..........................................................20
   3.21.  Environmental Compliance...........................................21
   3.22.  Customers and Suppliers............................................24
   3.23.  Transactions with Affiliates.......................................24
   3.24.  Bank Accounts; Powers of Attorney..................................24


<PAGE>   3


   3.25.  Other Information..................................................24
   3.26.  Intercompany Arrangements..........................................25
   3.27.  Representations....................................................25

ARTICLE IV --   ADDITIONAL REPRESENTATIONS AND WARRANTIES
                OF SELLERS...................................................25

   4.01.  Title to and Validity of Shares....................................25
   4.02.  Authority..........................................................26
   4.03.  Power To Act as Trustee or Executor................................26
   4.04.  Access to Information; Accredited Investor Representation..........26
   4.05.  Purchase for Investment............................................27

ARTICLE V -- REPRESENTATIONS AND WARRANTIES OF BUYER.........................27

   5.01.  Organization and Existence.........................................27
   5.02.  Corporate Authorization............................................27
   5.03.  Governmental Authorization.........................................27
   5.04.  Non-Contravention..................................................28
   5.05.  Finders' Fees......................................................28
   5.06.  Purchase for Investment............................................28
   5.07.  Litigation.........................................................28
   5.08.  SEC Filings........................................................28
   5.09.  Buyer Stock........................................................29

ARTICLE VI -- COVENANTS OF THE COMPANY, SELLERS AND THE
              PARTNERSHIP....................................................29

   6.01.  Resignations.......................................................29
   6.02.  Confidentiality....................................................29
   6.03.  Affiliate Agreements...............................................30
   6.04.  Tax Covenants......................................................30
   6.05.  [Intentionally Omitted]............................................31
   6.06.  Covenant of the Partnership........................................31
   6.07.  Approval of Parachute Payments.....................................31
   6.08.  Reorganization Status..............................................31
   6.09. Sale or Exchange Status.............................................31
   6.10. Satisfaction of Buyer's Withholding Obligation......................31

ARTICLE VII -- COVENANTS OF BUYER............................................32
<PAGE>   4

   7.01.  Confidentiality....................................................32
   7.02.  Access.............................................................33
   7.03.  Resale Registration Statement......................................33
   7.04.  Annual Report on Form 10-K.........................................34
   7.05.  Affiliate Agreements...............................................34
   7.06.  Bonuses............................................................34
   7.07.  Historical Bonuses.................................................34
   7.08.  Vacation...........................................................34
   7.09.  Reorganization Status..............................................34
   7.10.  Business Continuity................................................35

ARTICLE VIII -- COVENANTS OF ALL PARTIES.....................................35

   8.01.  Best Efforts.......................................................35
   8.02.  Certain Filings....................................................35
   8.03.  Public Announcements...............................................35
   8.04.  Pooling............................................................36

ARTICLE IX -- EMPLOYEE BENEFITS..............................................36

   9.01.  Employee Benefits Definitions......................................36
   9.02.  ERISA Representations..............................................37
   9.03.  No Third Party Beneficiaries.......................................38

ARTICLE X -- CONDITIONS TO CLOSING...........................................39

   10.01.  Conditions to the Obligations of Each Party.......................39
   10.02.  Conditions to Obligation of Buyer.................................40
   10.03.  Conditions to Obligation of Sellers...............................42

ARTICLE XI -- SURVIVAL; INDEMNIFICATION......................................44

   11.01.  Survival..........................................................44
   11.02.  Indemnification...................................................44
   11.03.  Procedures........................................................46

ARTICLE XII -- [Intentionally Omitted].......................................46

ARTICLE XIII -- [Intentionally Omitted]......................................46
<PAGE>   5
                                      

ARTICLE XIV -- MISCELLANEOUS.................................................46

   14.01.  Notices...........................................................46
   14.02.  Amendments; No Waivers............................................48
   14.03.  Expenses..........................................................48
   14.04.  Successors and Assigns............................................49
   14.05.  Further Assurances................................................49
   14.06.  Governing Law.....................................................49
   14.07.  Counterparts; Effectiveness.......................................49
   14.08.  Entire Agreement..................................................49
   14.09.  Captions..........................................................49
   14.10.  Jurisdiction......................................................49


Schedules
- ---------

Schedule 2.01    List of Stockholders
Schedule 3.07    Financial Statements
Schedule 3.08    Absence of Certain Changes
Schedule 3.10    Liabilities
Schedule 3.11    Litigation
Schedule 3.12    Material Contracts
Schedule 3.13    Insurance
Schedule 3.14    Permits
Schedule 3.16    Intellectual Property
Schedule 3.19    Tax
Schedule 3.20    Employees
Schedule 3.21    Environmental Matters
Schedule 3.22    Customers and Suppliers
Schedule 3.23    Transactions with Affiliates
Schedule 3.24    Bank Accounts
Schedule 3.26    Intercompany Arrangements
Schedule 4.01    Title to Shares
Schedule 5.03    Consents and Approvals
Schedule 7.06    Bonuses
Schedule 7.07    Historical Bonuses
Schedule 7.08    Vacation Benefits
Schedule 9.02    Employee Plans
Schedule 10.03   Release of personal Guarantees

<PAGE>   6
                                      

Exhibits
- --------

Exhibit A.       Affiliate Agreements
Exhibit B.       [Intentionally Omitted]
Exhibit C.       [Intentionally Omitted]
Exhibit D.       Escrow Agreement
Exhibit E.       [Intentionally Omitted]
Exhibit F.       Real Estate Conveyance Documents
Exhibit G.       Registration Rights Agreement


<PAGE>   7


                                       -1-


                               PURCHASE AGREEMENT

     AGREEMENT dated as of August 22, 1996 among State and Federal Associates,
Inc., a Virginia corporation (the "Company"); the stockholders of the Company
listed on the signature pages hereto (the "Sellers"); S&FA of Alexandria
Partnership, a Virginia general partnership (the "Partnership"); and PAREXEL
International Corporation, a Massachusetts corporation ("Buyer").

                              W I T N E S S E T H :

     WHEREAS, Buyer desires to purchase from Sellers all of the outstanding
shares of capital stock of the Company owned by them and set forth on SCHEDULE
2.01 (the "Shares");

     WHEREAS, each Seller desires to sell to Buyer all of the Shares owned by
such Seller; and

     WHEREAS, the Partnership desires to convey to Buyer or the Company, at the
discretion of Buyer, certain real estate owned by the Partnership;

     NOW, THEREFORE, the parties hereto agree as follows:

                                    ARTICLE I

                                   DEFINITIONS

     1.01. DEFINITIONS. (a) The following terms, as used herein, have the
following meanings:

     "AFFILIATE" means, with respect to any Person, any Person directly or
indirectly controlling, controlled by, or under common control with such Person.

     "AFFILIATE AGREEMENTS" means the agreements described in Sections 6.09 and
7.05, a form of each of which is attached as EXHIBIT A.

     "ANCILLARY AGREEMENTS" means the Escrow Agreement, Affiliate Agreements,
Registration Rights Agreement and Real Estate Conveyance Documents.


<PAGE>   8

                                      -2-

     "BALANCE SHEET" means the balance sheet of the Company as of June 30, 1996
referred to in Section 3.07.

     "BALANCE SHEET DATE" means June 30, 1996.

     "BUYER STOCK" means the number of shares of common stock, $.01 par value
per share ("Buyer Common Stock"), of Buyer as is determined by dividing
$20,000,000 by the average of the last reported sale price of the common stock
of the Buyer on the Nasdaq National Market for the 26 trading days ending the
second trading day immediately preceding the Closing Date (subject to
appropriate adjustment in the event of a stock split or reverse stock split)
(the "Market Price"). On the Closing Date, the Market Price, as calculated
pursuant to this paragraph, will be $42.07.

     "BUYER'S COUNSEL" means the law firm of Testa, Hurwitz & Thibeault, LLP,
Boston, Massachusetts.

     "CLOSING DATE" means the date of the Closing.

     "COMMON STOCK" means the common stock, $.01 par value, of the Company.

     "CODE" means the Internal Revenue Code of 1986, as amended.

     "ESCROW AGENT" means the escrow agent that is a signatory to the Escrow
Agreement.

     "ESCROW AGREEMENT" means the Escrow Agreement among Sellers, Buyer and the
Escrow Agent in the form set forth in EXHIBIT D.

     "INTELLECTUAL PROPERTY RIGHT" means all (A) patents, patent applications,
patent disclosures and all related continuation, continuation-in-part,
divisional, reissue, re-examination, utility, model, certificate of invention
and design patents, patent applications, registrations and applications for
registrations, (B) trademarks, service marks, trade dress, logos, tradenames,
service names and corporate names and registrations and applications for
registration thereof, (C) copyrights and registrations and applications for
registration thereof, (D) mask works and registrations and applications for
registration thereof, (E) computer software, data and documentation, (F) trade
secrets and confidential business information, whether patentable or
nonpatentable and whether or not reduced to practice, know-how, manufacturing
and product processes and techniques, research and development information,


<PAGE>   9
                                      -3-

copyrightable works, financial, marketing and business data, pricing and cost
information, business and marketing plans and customer and supplier lists and
information, (G) other proprietary rights relating to any of the foregoing
(including without limitation associated goodwill and remedies against
infringements thereof and rights of protection of an interest therein under the
laws of all jurisdictions) and (H) copies and tangible embodiments thereof.

     "LIEN" means, with respect to any asset, any mortgage, lien, pledge,
charge, security interest, restriction or encumbrance of any kind in respect of
such asset.

     "MATERIAL ADVERSE CHANGE" means a material adverse change in the business,
assets, condition (financial or otherwise), results of operations or prospects
of the Company.

     "MATERIAL ADVERSE EFFECT" means a material adverse effect on the business,
assets, condition (financial or otherwise), results of operations or prospects
of the Company.

     "MILLER" means Martin Miller, one of the Sellers.

     "1934 ACT" means the Securities Exchange Act of 1934, as amended, and the
rules and regulations promulgated thereunder.

     "OPTION CONVERSION RATIO" means 0.60.

     "OPTION SHARES" means the Shares designated on SCHEDULE 2.01 issued as
incentive shares in connection with the Company's Non-Qualified Stock Option
Plan.

     "PERSON" means an individual, corporation, partnership, association, trust
or other entity or organization, including a government or political subdivision
or an agency or instrumentality thereof.

     "RAVEN" means Robert F. Raven, an equity holder of the Company who is
selling the Raven Shares to Buyer on the date hereof pursuant to the terms of a
separate Purchase Agreement (the "Raven Purchase Agreement").

     "RAVEN BUYER STOCK" means the number of shares of Buyer Common Stock of the
Buyer to be issued to Raven pursuant to that certain Raven Purchase Agreement
(excluding shares of Buyer Common Stock to be issued pursuant to the Real Estate
Conveyance Documents) calculated as follows: (a) the total dollar amount owed to
Raven in accordance with the provisions of that certain Redemption Agreement
dated as of January 3, 1996 by and


<PAGE>   10
                                      -4-

between the Company and Raven (the "Redemption Agreement") divided by the Market
Price, rounded to the nearest whole share.

     "RAVEN SHARES" means the shares of Common Stock owned by Raven, subject to
the terms of the Redemption Agreement.

     "REAL ESTATE CONVEYANCE DOCUMENTS" means the documents required by Buyer to
effectuate the conveyance to the Company or Buyer, as designated by Buyer, the
fee title to condominium units 160, 170 and 600 located at 1101 King Street,
Alexandria, Virginia (the "Purchase Real Estate") in accordance with the
provisions of Section 3.09 and Article 10 in the form of EXHIBIT F.

     "REGISTRATION RIGHTS AGREEMENT" means the Registration Rights Agreement
between Sellers and Buyer in the form of EXHIBIT G.

     "SELLERS' COUNSEL" means the law firm of Baker & McKenzie, Washington, D.C.

     "SHARE CONVERSION RATIO" means 37.048966.

     "SHAREHOLDER SHARES" means the Shares designated on SCHEDULE 2.01 owned as
of the Closing Date without any vesting restrictions.

     "SUBSIDIARY" means any entity of which securities or other ownership
interests having ordinary voting power to elect a majority of the board of
directors or other persons performing similar functions are owned directly or
indirectly by the Company.

     (b) Each of the following terms is defined in the Section set forth
opposite such term:

          Term                           Section
          ----                           -------

          Benefit Arrangement             9.01
          Closing                         2.02
          Company Securities              3.05
          Damages                        11.02
          Employee Plans                  9.01
          ERISA                           9.01


<PAGE>   11

                                      -5-

          ERISA Affiliate                 9.01
          Escrow Shares                   2.02
          Financial Statements            3.07
          Hazardous Substance             3.21
          Indemnified Party              11.03
          Indemnifying Party             11.03
          Indemnitees                    13.03
          Multiemployer Plan              9.01
          Partnership Stock               2.02
          Purchase Price                  2.01
          Release                         3.21
          Permit                          3.14
          Tax                             3.19
          Tax Authority                   3.19
          Tax Return                      3.19



<PAGE>   12
                                      -6-


                                   ARTICLE II

                                PURCHASE AND SALE

     2.01. PURCHASE AND SALE. Upon the terms and subject to the conditions of
this Agreement, each Seller, severally but not jointly, shall sell to Buyer, and
Buyer shall purchase from each such Seller, at the Closing, that number of
Shares as is set forth opposite such Seller's name on SCHEDULE 2.01. The
aggregate purchase price (a) for each Seller with respect to their Shareholder
Shares, to be paid in shares of Buyer Stock, shall be equal to the number of
Shareholder Shares owned by such Seller multiplied by the Share Conversion
Ratio, rounded to the nearest whole share, (b) for each Seller with respect to
their Option Shares, to be paid in shares of Buyer Stock, shall be equal to the
number of Option Shares owned by such Seller multiplied by the product of (i)
the Option Conversion Ratio and (ii) the Share Conversion Ratio, rounded to the
nearest whole share, and (c) for Raven (to be set forth in the Raven Purchase
Agreement), to be paid in shares of Buyer Stock, shall be equal to the Raven
Buyer Stock (in each instance, such shares of Buyer Stock being referred to as
the "Purchase Price"). Raven shall acknowledge in the Raven Purchase Agreement
that the sale by Raven of Shares held by Scott G. Adams ("Adams"), as escrow
agent under the Redemption Agreement, and the payment to Raven under the Raven
Purchase Agreement shall constitute full payment, satisfaction and discharge of
the obligations of Raven and the Company under the Redemption Agreement. The
Purchase Price shall be paid as provided in Section 2.02.

     2.02. CLOSING. The closing (the "Closing") of the purchase and sale of the
Shares hereunder shall take place at the offices of Sellers' Counsel in
Washington, D.C. or such other location as the parties may mutually agree upon
as soon as possible, but in no event later than 10 business days after
satisfaction of the conditions set forth in Article X, or at such other time or
place as Buyer and Sellers may agree. At the Closing,

          (a) Buyer shall deliver to each Seller certificates representing the
number of shares of Buyer Stock equal to ninety and one-tenth percent (90.1%) of
the shares of Buyer Stock to which such holder is entitled pursuant to Section
2.01 hereof (rounded up to the nearest whole number of shares).

          (b) Buyer shall deliver to the Escrow Agent certificates representing
the number of shares of Buyer Stock equal to nine and nine-tenths percent (9.9%)
of the shares of Buyer Stock to which each Seller is entitled pursuant to
Section 2.01 hereof (rounded


<PAGE>   13
                                      -7-

down to the nearest whole number of shares) (the "Escrow Shares"), to be held by
the Escrow Agent in accordance with the Escrow Agreement.

          (c) Sellers shall deliver to Buyer certificates for the Shares duly
endorsed or accompanied by stock powers duly endorsed in blank, with any
required transfer stamps affixed thereto.

          (d) The appropriate parties shall enter into the Ancillary Agreements.

          (e) The Partnership will convey the Purchase Real Estate in accordance
with Section 3.09 and Article 10, for a total consideration of $2,513,421.14 and
the Buyer shall pay in full or assume all of the obligations encumbering the
Purchase Real Estate (in the aggregate amount of $2,313,421.14) and issue to the
Partnership 4,754 shares of Buyer Common Stock (the "Partnership Stock"), in
accordance with the terms of the Real Estate Conveyance Documents. Buyer and the
Partnership shall each bear the respective expenses directly related to the
transfer of the Purchase Real Estate as set forth in the Settlement Sheet
referred to in Section 10.01.

          (f) Buyer, Raven and Adams, as escrow agent for shares owned by Raven,
shall execute and deliver the Raven Purchase Agreement.

          (g) The parties shall execute and deliver any other instruments,
documents and certificates that are required to be delivered pursuant to this
Agreement or as may be reasonably requested by any party in order to consummate
the transactions contemplated by this Agreement.

                                   ARTICLE III

                        REPRESENTATIONS AND WARRANTIES OF
                    THE COMPANY, SELLERS AND THE PARTNERSHIP

     The Company and each Seller (but only the Partnership with respect to
Sections 3.09 and 3.14(d) to the extent and only to the extent those sections
relate to the Purchase Real Estate) hereby jointly and severally represent and
warrant to Buyer as of the date hereof and as of the Closing Date that:


<PAGE>   14
                                      -8-

     3.01. CORPORATE EXISTENCE AND POWER. The Company is a corporation duly
incorporated, validly existing and in good standing under the laws of its
jurisdiction of incorporation, and has all corporate powers and all governmental
licenses, authorizations, consents and approvals required to carry on its
business as now conducted. The Company is duly qualified to do business as a
foreign corporation and is in good standing in each jurisdiction where the
character of the property owned or leased by it or the nature of its activities
make such qualification necessary, except for those jurisdictions where failure
to be so qualified would not, individually or in the aggregate, have a Material
Adverse Effect. The Company has heretofore delivered to Buyer true and complete
copies of the corporate charter and by-laws of the Company as currently in
effect.

     3.02. CORPORATE AUTHORIZATION. The execution, delivery and performance by
the Company of this Agreement and the consummation by the Company of the
transactions contemplated hereby are within the Company corporate powers and
have been duly authorized by all necessary corporate action on the part of the
Company. This Agreement constitutes a valid and binding agreement of the
Company, enforceable in accordance with its terms, except as such enforcement is
limited by bankruptcy, insolvency and other similar laws affecting the
enforcement of creditors' rights generally, and by general equitable principles.

     3.03. GOVERNMENTAL AUTHORIZATION; CONSENTS. (a) The execution, delivery and
performance by the Company of this Agreement require no action by or in respect
of, or filing with, any governmental body, agency, official or authority.

          (b) No consent, approval, waiver or other action by any Person under
any contract, agreement, indenture, lease, instrument or other document to which
the Company is a party or by which it is bound is required or necessary for the
execution, delivery and performance of this Agreement by the Company or the
consummation of the transactions contemplated hereby.

     3.04. NON-CONTRAVENTION. The execution, delivery and performance by the
Company of this Agreement and the consummation of the transactions contemplated
hereby do not and will not (i) contravene or conflict with the corporate charter
or by-laws of the Company, (ii) contravene or conflict with or constitute a
violation of any provision of any law, regulation, judgment, injunction, order
or decree binding upon or applicable to the Company; (iii) constitute a default
under or give rise to any right of termination, cancellation or acceleration of
any right or obligation of the Company or to a loss of any benefit to which the
Company is entitled under any provision of any agreement, contract or other
instrument binding upon


<PAGE>   15
                                      -9-

the Company or any permit held by the Company or (iv) assuming the receipt of
all required consents result in the creation or imposition of any Lien on any
asset of the Company.

     3.05. CAPITALIZATION. The authorized capital stock of the Company consists
of 50,000 shares of common stock. As of the date hereof, there were outstanding
18,856 shares of Common Stock, including 845 shares of Common Stock issued
pursuant to the Company's Non-Qualified Stock Option Plan dated January 1, 1990.
There are no outstanding employee stock options or any other outstanding options
to purchase any shares of Common Stock. All outstanding shares of capital stock
of the Company have been duly authorized and validly issued and are fully paid
and are owned by Sellers (subject only to the vesting restrictions on the Option
Shares) and Raven (subject to the provisions of the Redemption Agreement) as
shown on SCHEDULE 2.01. Except as set forth in this Section, there are no
outstanding (i) shares of capital stock, other securities or phantom or other
equity interests of the Company, (ii) securities of the Company convertible into
or exchangeable for shares of capital stock or other securities of the Company
or (iii) options or other rights to acquire from the Company any capital stock,
other securities or phantom or other equity interests of the Company (the items
in clauses (i), (ii) and (iii) being referred to collectively as the "Company
Securities"). Other than the Redemption Agreement, there are no outstanding
obligations of the Company, actual or contingent, to issue or deliver or to
repurchase, redeem or otherwise acquire any Company Securities.

     3.06. SUBSIDIARIES. The Company does not have any Subsidiaries or any
ownership or equity interest in or control of (direct or indirect) any other
Person.

     3.07. FINANCIAL STATEMENTS. The Company has previously furnished Buyer with
a true and complete copy of (i) the balance sheets of the Company as of December
31, 1993, 1994 and 1995, and the statements of operations, cash flows and
changes in stockholders' equity of the Company for the respective fiscal years
then ended, as audited by Ross Langan & McKendree, and (ii) the unaudited
balance sheet of the Company as of June 30, 1996 and the statements of income,
cash flows and changes in stockholders' equity of the Company for the interim
periods ended June 30, 1996, (collectively, the "FINANCIAL STATEMENTS" which are
attached hereto as SCHEDULE 3.07). Each of the balance sheets included in the
Financial Statements fairly presents in all material respects the financial
position of the Company as of its date, and the other statements included in the
Financial Statements fairly present in all material respects the results of
operations, cash flows and stockholders' equity, as the case may be, of the
Company for the periods therein set forth, in each case in accordance with
generally accepted accounting principles consistently applied during the periods
involved except as otherwise stated therein and, with respect to the unaudited
interim financial


<PAGE>   16
                                      -10-

statements, for the omission of footnote disclosures and, to the extent
consistent with generally accepted accounting principles, for normally recurring
year-end audit adjustments.

     3.08. ABSENCE OF CERTAIN CHANGES. Except as set forth in SCHEDULE 3.08 or
as required by this Agreement, since the Balance Sheet Date, the Company has
conducted its business in the ordinary course consistent with past practices and
there has not been:

          (a) to the best knowledge of the Company and each Seller after
reasonable inquiry of appropriate Company personnel, any Material Adverse Change
or any event, occurrence, development or state of circumstances or facts which
could reasonably be expected to result in a Material Adverse Change;

          (b) except as set forth in the Redemption Agreement, any declaration,
setting aside or payment of any dividend or other distribution with respect to
any Company Securities or any repurchase, redemption or other acquisition by the
Company of any outstanding shares of capital stock or other securities of, or
other ownership interests in, the Company;

          (c) any amendment of any outstanding security of the Company;

          (d) any incurrence, assumption or guarantee by the Company of any
indebtedness for borrowed money;

          (e) any creation or assumption by the Company of any Lien on any
asset;

          (f) any making of any loan, advance or capital contributions to or
investment in any Person;

          (g) any damage, destruction or other casualty loss (whether or not
covered by insurance) affecting the business or assets of the Company which,
individually or in the aggregate, has had or would reasonably be expected to
have a Material Adverse Effect;

          (h) any transaction or commitment made, or any contract or agreement
entered into, by the Company relating to its assets or business (including the
acquisition or disposition of any assets) or any relinquishment by the Company
of any contract or other right, in either case, material to the Company, other
than transactions and commitments in the ordinary course of business consistent
with past practices and those contemplated by this Agreement;


<PAGE>   17
                                      -11-

          (i) any change in any method of accounting or accounting practice by
the Company;

          (j) any (i) grant of any severance or termination pay to any director,
officer or employee of the Company, (ii) entering into of any employment,
deferred compensation or other similar agreement (or any amendment to any such
existing agreement) with any director, officer or employee of the Company, (iii)
change in benefits payable under existing severance or termination pay policies
or employment agreements or (iv) change in compensation, bonus or other benefits
payable to directors, officers or employees of the Company; or

          (k) any labor dispute, other than routine individual grievances, or
any activity or proceeding by a labor union or representation thereof to
organize any employees of the Company, which employees were not subject to a
collective bargaining agreement at the Balance Sheet Date, or any lockouts,
strikes, slowdowns, work stoppages or threats thereof by or with respect to any
employees of the Company.

     3.09. PROPERTY AND EQUIPMENT. (a) The Company has good and marketable title
to, or in the case of leased property has valid leasehold interests in, all
personal property and assets (whether tangible or intangible) reflected on the
Balance Sheet or acquired after the Balance Sheet Date, except for properties
and assets sold since the Balance Sheet Date in the ordinary course of business
consistent with past practices, and a valid leasehold interest in leased real
property and the Buyer has, or will have, as of the Closing Date, good and clear
record and marketable fee title to the Purchase Real Estate and all real
property owned currently by the Company (collectively, "Owned Real Estate")
subject only to such matters as are listed in the title insurance policies
described in Section 10.02 ("Permitted Exceptions"). None of such properties or
assets is subject to any Liens, except:

               (i) Liens disclosed on the Balance Sheet;

               (ii) Liens for Taxes not yet due or being contested in good faith
          (and for which adequate accruals or reserves have been established on
          the Balance Sheet);

               (iii) Liens which do not materially detract from the value of
          such property or assets as now used, or materially interfere with any
          present or intended use of such property or assets; or


<PAGE>   18
                                     -12-

               (iv) Permitted Exceptions (as to Owned Real Estate).

          (b) There are no developments affecting any of such properties or
assets pending or, to the knowledge of Sellers or the Company threatened, which
might materially detract from the value of such property assets, materially
interfere with any present or intended use of any such property or assets or
materially adversely affect the marketability of or title to such properties or
assets.

          (c) The real and personal property and equipment owned or leased by
the Company and the Purchase Real Estate, have no material defects, are in good
operating condition and repair (ordinary wear and tear excepted), and are
substantially adequate for the uses to which they are being put.

          (d) The assets owned or leased by the Company, or which it otherwise
has the right to use, constitute all of the assets held for use or used in
connection with the business of the Company and are generally adequate to
conduct such business as currently conducted.

          (e) Except as set forth on SCHEDULE 3.09, there exist no violations
of, or defaults under, the Declaration of 1101 King Street Condominium recorded
with the land records of the City of Alexandria, Virginia in Book 1194 at Page
669 (the "Declaration") and any Plats, Bylaws, Maintenance Agreements and any
other documents attached thereto or referred to therein, and any amendments
thereof, or under the rules and regulations promulgated thereunder
(collectively, the "Condominium Documents"), with respect to the Purchase Real
Estate. The Partnership has, and will have, as of the Closing Date, complied in
all respects with the requirements of the Condominium Documents and of all laws,
regulations, ordinances and the like relating to the Purchase Real Estate and
the transfer thereof to the Buyer.

          (f) All charges, assessments, fees, expenses, costs or other amounts
(collectively, "Charges") due with respect to the Purchase Real Estate under the
Condominium Documents are current and shall be paid in full as of the Closing
together any fines, interest or penalties related thereto. The Company, the
Partnership and the Sellers have not received notice and have no knowledge of
any pending or proposed special assessments or other charges with respect to the
Purchase Real Estate. To the best of the Company's, the Partnership's and the
Seller's knowledge, no unit owner under the condominium created by the
Declaration has failed to pay any charges, assessments, fees or costs beyond
sixty days after the date such amount is due. There are no Charges applicable


<PAGE>   19
                                      -13-

to the Purchase Real Estate, pending, proposed, or actual, except as set forth
in the Certificate of Resale or the Certificate of Expenses referred to in
Section 10.02.

          (g) Except as set forth on SCHEDULE 3.09, all leases and subleases
with respect to the Purchase Real Estate have been filed with the Board of
Directors of the Condominium as required under the Condominium Documents and
conform with the requirements thereof.

          (h) The Owned Real Estate and leased real property are in compliance
with all applicable local zoning ordinances relating to the uses to which such
properties are currently used, and neither the Company, the Partnership nor the
Sellers have received any notice of violation from the applicable local zoning
authorities with respect to any of such properties.

          (i) The 1996 Condominium budget, the tax bills, and the Declaration
which were previously provided to Buyer by Sellers are true and complete copies
thereof and Sellers, the Company and the Partnership have previously delivered
to Buyer copies of all documents, budgets and bills relating to the Purchase
Real Estate, which any of them has in its, or its counsel's, possession.

          (j) All costs for utilities during normal business hours for the
Purchase Real Estate are included within monthly condominium fees and none are
billed separately.

          (k) There are no Limited Common Areas or Reserved Common Areas (as
defined in the Condominium Documents) affecting the Purchase Real Estate except
for a balcony attached to Unit 600 for which there are currently no separate
Charges.

          (l) There are no leases, subleases or other occupancy agreements
(collectively, "Leases") affecting the Purchase Real Estate except as set forth
in SECTION 3.12, true and complete copies of which have been previously provided
by Sellers to Buyer. All information previously provided by Sellers to Buyer
concerning rentals, escalations and other charges due or payable under any
Leases is true, accurate and complete in all respects.

          (m) There are no agreements for parking spaces, used or to be used, in
connection with any Owned Real Estate or any leased real property except for
month-to-month arrangements terminable at will, at the current rate of $70.00
per month per space.

     3.10. NO UNDISCLOSED MATERIAL LIABILITIES. Except as set forth in SCHEDULE
3.10, there are no liabilities of the Company of any kind whatsoever, whether
accrued, contingent,


<PAGE>   20
                                      -14-

absolute, determined or determinable, and there is no existing condition,
situation or set of circumstances which could reasonably be expected to result
in such a liability, other than:

          (i) liabilities disclosed or provided for in the Balance Sheet; and

          (ii) liabilities incurred in the ordinary course of business
     consistent with past practice since the Balance Sheet Date, which in the
     aggregate are not material to the Company.

     3.11. LITIGATION. Except as set forth in SCHEDULE 3.11, there is no action,
suit, investigation or proceeding (or any basis therefor) pending against, or to
the knowledge of Sellers threatened against or affecting, the Company or any of
its owned or leased properties or the transactions contemplated hereby before
any court or arbitrator or any governmental body, agency, official or authority.

     3.12. MATERIAL CONTRACTS. (a) Except for agreements, contracts, plans,
leases, arrangements or commitments disclosed in SCHEDULE 3.12 or any other
schedule to this Agreement, the Company is not a party to or subject to:

               (i) any lease providing for annual rentals of $15,000 or more;

               (ii) any contract for the purchase of materials, supplies, goods,
          services, equipment or other assets providing for annual payments by
          the Company of $15,000 or more;

               (iii) any sales, distribution or other similar agreement
          providing for the sale by the Company of materials, supplies, goods,
          services, equipment or other assets providing for annual payments to
          the Company of $15,000 or more;

               (iv) any partnership, joint venture or other similar contract
          arrangement or agreement;

               (v) any contract relating to indebtedness for borrowed money or
          the deferred purchase price of property (whether incurred, assumed,
          guaranteed or secured by any asset), except contracts relating to
          indebtedness incurred in the ordinary course of business in an amount
          not exceeding $15,000;


<PAGE>   21
                                      -15-

               (vi) any license agreement, franchise agreement or agreement in
          respect of similar rights granted to or held by the Company;

               (vii) any agency, dealer, sales representative or other similar
          agreement;

               (viii) any contract or other document that limits the freedom of
          the Company to compete in any line of business or with any Person or
          in any area or which would so limit the freedom of the Company after
          the Closing Date; or

               (ix) any other contract or commitment not made in the ordinary
          course of business that is material to the Company.

          (b) Each agreement, contract, plan, lease, arrangement and commitment
disclosed in any schedule to this Agreement or required to be disclosed pursuant
to Section 3.12(a) is a valid and binding agreement of the Company and is in
full force and effect, and neither the Company nor, to the knowledge of the
Company and Sellers, any other party thereto is in default in any material
respect under the terms of any such agreement, contract, plan, lease,
arrangement or commitment.

     3.13. INSURANCE COVERAGE. The Company has furnished to Buyer a list of, and
true and complete copies of, all insurance policies and fidelity bonds covering
the assets, business, equipment, properties, operations, employees, officers and
directors of the Company. There is no claim by the Company pending under any of
such policies or bonds as to which coverage has been questioned, denied or
disputed by the underwriters of such policies or bonds. All premiums payable
under all such policies and bonds have been paid and the Company is otherwise in
full compliance with the terms and conditions of all such policies and bonds.
Except as set forth in SCHEDULE 3.13, such policies of insurance and bonds (or
other policies and bonds providing substantially similar insurance coverage)
have been in effect since the Company's inception and remain in full force and
effect. Such policies of insurance and bonds are of the type and in amounts
customarily carried by Persons conducting businesses similar to those of the
Company. Neither the Company nor any of the Sellers knows of any threatened
termination of, or premium increase with respect to, any of such policies or
bonds.

     3.14. COMPLIANCE WITH LAWS; NO DEFAULTS. (a) The Company is not in
violation of, or has violated, any applicable provisions of any laws, statutes,
ordinances or regulations except


<PAGE>   22
                                      -16-

for violations that have not had and would not reasonably be expected to have,
individually or in the aggregate, a Material Adverse Effect.

          (b) SCHEDULE 3.14 correctly describes each license and permit (a
"Permit") material to the business of the Company, together with the name of the
governmental agency or entity issuing such license or permit. Such licenses and
permits are valid and in full force and effect and none of such licenses or
permits will be terminated or impaired or become terminable as a result of the
transactions contemplated hereby, except to the extent such termination or
impairment would not have a Material Adverse Effect.

          (c) The Company is not in default under, and no condition exists that
with notice or lapse of time or both would constitute a default under, (i) any
mortgage, loan agreement, indenture or evidence of indebtedness for borrowed
money to which the Company is a party or by which the Company or any material
amount of its assets is bound or (ii) any judgment, order or injunction of any
court, arbitrator or governmental body, agency, official or authority.

          (d) Except as otherwise set forth on SCHEDULE 3.14, all Owned Real
Estate and leased real property is in compliance with (i) all applicable
federal, state and local laws, regulations, ordinances, orders and the like;
(ii) all condominium documents relating thereto and (iii) all Permitted
Exceptions.

     3.15. FINDERS, FEES. There is no investment banker, broker, finder or other
intermediary which has been retained by or is authorized to act on behalf of
Sellers or the Company who might be entitled to any fee or commission from
Buyer, the Company or any of their respective Affiliates upon consummation of
the transactions contemplated by this Agreement.

     3.16. INTELLECTUAL PROPERTY. (a) SCHEDULE 3.16 includes a list of all
Intellectual Property Rights specifying as to each, as applicable: (i) the
nature of such Intellectual Property Right; (ii) the owner of such Intellectual
Property Right; (iii) the jurisdictions by or in which such Intellectual
Property Right is recognized without regard to registration or has been issued
or registered or in which an application for such issuance or registration has
been filed, including the respective registration or application numbers; and
(iv) licenses, sublicenses and other agreements as to which the Company or any
of its Affiliates is a party and pursuant to which any Person is authorized to
use such Intellectual Property Right, including the identity of all parties
thereto, a description of the nature and subject matter thereof, the applicable
royalty and the term thereof.


<PAGE>   23
                                      -17-

          (b)(i) The Company during the three years preceding the date of this
Agreement has not been sued or charged in writing with or been a defendant in
any claim, suit, action or proceeding relating to its business that has not been
finally terminated prior to the date hereof and that involves a claim of
infringement of any patents, trademarks, service marks or copyrights, and (ii)
except as set forth in SCHEDULE 3.16, the Company and Sellers have no knowledge
of any other claim or infringement by the Company, and no knowledge of any
continuing infringement by any other Person of any Intellectual Property Rights.
No Intellectual Property Right is subject to any outstanding order, judgment,
decree, stipulation or agreement of which the Company or Sellers are aware or to
which the Company is a party restricting the use thereof by the Company or
restricting the licensing thereof by the Company to any Person. The Company has
not entered into any agreement to indemnify any other Person against any charge
of infringement of any patent, trademark, service mark or copyright.

          (c) None of the processes and formulae, research and development
results and other know-how of the Company, the value of which to the Company is
contingent upon maintenance of the confidentiality thereof, has, to the
knowledge of the Company or the Sellers, been disclosed by the Company to any
Person other than employees, representatives and agents of the Company who are
parties to confidentiality agreements with the Company.

          (d) To the knowledge of the Company and Sellers, no third party has
asserted any claim, or has any reasonable basis to assert any valid claim,
against the Company with respect to (i) the continued employment by, or
association with, the Company of any of the present officers, employees of or
consultants to the Company or (ii) the use by the Company or any of such Persons
in connection with their activities for or on behalf of the Company of any
information which the Company or any of such Persons would be prohibited from
using under any prior agreements or arrangements or any laws applicable to
unfair competition, trade secrets or proprietary information.

          (e) Except as set forth on SCHEDULE 3.16, no such Intellectual
Property Rights have been registered with any governmental authority.

          (f) Except as set forth on SCHEDULE 3.16 and except for licenses to
use the Company's products granted by the Company in the ordinary course of its
business to third parties, the Company owns or has the exclusive right to use,
sell, license or dispose of, and has the exclusive right to bring actions for
the infringement of, all Intellectual Property Rights necessary or required for
the conduct of its business as presently conducted.


<PAGE>   24
                                      -18-

          (g) The execution, delivery and performance of this Agreement and the
consummation of the other transactions contemplated hereby will not breach,
violate or conflict with any instrument or agreement governing any Intellectual
Property Right, will not cause the forfeiture or termination or give rise to a
right of forfeiture or termination of any Intellectual Property Right or in any
way impair the right of the Company to sue, sell, license or dispose of, or to
bring any action for other infringement of, any Intellectual Property Right or
portion thereof.

          (h) Except as set forth in SCHEDULE 3.16, none of the former or
present employees, officers, directors, consultants or contractors of the
Company holds any right, title or interest, directly or indirectly, in whole or
in part, in or to any of the Intellectual Property Rights which the Company is
currently using or the use of which is necessary for the business of the Company
as presently conducted or as proposed to be conducted. To the knowledge of the
Company and Sellers, no employee of the Company is in violation of any term of
any employment contract, patent disclosure agreement or any other contract or
agreement relating to the relationship of any such employee with the Company or
any other party because of the nature of the business conducted or to be
conducted by the Company. Except as set forth in SCHEDULE 3.16, no person has
any so-called "moral rights," including any right to identification of
authorship, rights of approval of modifications or limitations on subsequent
modifications, in or to any of the Intellectual Property Rights owned by the
Company. Nothing prohibits the Company from (i) modifying, changing, altering,
adapting, revising, translating, adding to or subtracting from any of the
Intellectual Property Rights owned by the Company; (ii) doing any of the
foregoing without obligation to name the author of any of the Intellectual
Property Rights owned by the Company or to give credit to any person in
connection therewith or (iii) leasing, licensing, distributing or marketing any
of the Intellectual Property Rights owned by the Company without the consent of
any person.

     3.17. INVENTORIES. The Company does not have any inventory.

     3.18. RECEIVABLES. All accounts, notes receivable and other receivables
(other than receivables collected since the Balance Sheet Date) reflected on the
Balance Sheet are, and all accounts and notes receivable of the Company at the
Closing Date will be, valid, genuine and arising in the normal course of the
Company's business. All accounts, notes receivable and other receivables of the
Company at the Balance Sheet Date have been included in the Balance Sheet.


<PAGE>   25


     3.19. Taxes.
           -----

          (a) "TAX" means any federal, state, local, foreign net income,
alternative or add-on minimum tax, estimated, gross income, gross receipts,
sales, use, ad valorem, value added, transfer, franchise, capital profits,
lease, service, license, withholding, payroll, employment, excise, severance,
stamp, occupation, premium, property, environmental or windfall profit tax,
custom, duty or other tax, governmental fee or other like assessment or charge
of any kind whatsoever, together with any interest, penalty, addition to tax or
additional amount with respect thereto.

          "TAX RETURN" means any return, declaration, report, statement, claim
for refund, or information statement relating to Taxes, including any schedule
or attachment thereto, and including any amendment thereof.

          "TAX AUTHORITY" means any governmental authority responsible for the
imposition of any Tax.

          (b) The Company has timely filed all Tax Returns required to be filed
and has timely paid all Taxes owed (whether or not shown as due on such
returns), including, without limitation, all Taxes which the Company is
obligated to withhold for amounts owing to employees, creditors and third
parties. All such Tax Returns were complete and correct in all material
respects, and such Tax Returns correctly reflected the facts regarding the
income, business, assets, operations, activities, status and other matters of
the Company and any other information required to be shown thereon. All Taxes
with respect to which the Company has become obligated pursuant to elections
made by it in accordance with generally accepted practice have been paid. No
issues have been raised (and are currently pending) by any Tax Authority in
connection with any of such Tax Returns. The Company is not currently the
beneficiary of any extension of time within which to file any Tax Return, and
the Company has not waived any statute of limitation with respect to any Tax or
agreed to any extension of time with respect to a Tax assessment or deficiency.
All deficiencies asserted or assessments made as a result of any examinations
have been fully paid, or are fully reflected as a liability in the Balance Sheet
(as adjusted through the Closing Date in accordance with the past custom and
practice of the Company) or are being contested and an adequate reserve therefor
has been established and is fully reflected in such Balance Sheet. All material
elections with respect to Taxes affecting the Company, as of the date hereof,
are set forth in SCHEDULE 3.19. Other than the Option Shares, the Company is not
a party to any agreement, contract, arrangement or plan that has resulted or
would result, separately or in the aggregate, in the payment of any "excess
parachute payments" within the meaning of Section 280G of the Code (without
regard to the exceptions set forth in Sections 280G(b)(4)


<PAGE>   26
                                      -20-

and 280G(b)(5) of the Code). The Company has not agreed to make any adjustment
under Section 481(a) of the Code (or any corresponding provision of state, local
or foreign Tax law) by reason of a change in accounting method or otherwise. All
Taxes that have been withheld (or any such Taxes that were required to be
withheld) by or on behalf of the Company from any amounts payable to any Person
have been timely remitted to the appropriate Tax Authority. The Company is not,
and has not been, a U.S. real property holding company (as defined in Section
897(c)(2) of the Code) during the applicable period specified in Section
897(c)(1)(A)(ii) of the Code. No claim has ever been made by a Tax Authority in
a jurisdiction where the Company does not file Tax Returns that it is or may be
subject to Tax in that jurisdiction. The Company has not participated in an
international boycott as defined in Section 999 of the Code. No portion of the
Purchase Price is subject to the Tax withholding provisions of Section 3406 of
the Code, or of Subchapter A of Chapter 3 of the Code or of any other provision
of law. The Company is not a party to any joint venture, partnership, or other
arrangement or contract which could be treated as a partnership for federal
income tax purposes. The Company does not have, and has not had, a permanent
establishment in any foreign country, as defined in any applicable Tax treaty or
convention between the United States and such foreign country.

          (c) The Company has never filed a consent pursuant to Section 341(f)
of the Code, relating to collapsible corporations. The Company is not a party to
any Tax sharing or similar agreement. Except as set forth in SCHEDULE 3.19, the
Company has never been a member of a group filing a consolidated federal income
Tax Return, and the Company does not have any liability for the Taxes of any
Person under Treasury Regulation Section 1.1502-6 (or any corresponding
provision of state, local or foreign Tax law), as a transferee or successor, by
contract, or otherwise. The Company has no net operating losses or other tax
attributes presently subject to limitation under Sections 382, 383 or 384 of the
Code, or the federal consolidated return regulations.

          (d) There are no liens for Taxes (other than for current Taxes not yet
due and payable) upon the assets of the Company. The Company's liability for
Taxes not yet due or payable does not exceed the reserve for actual Taxes (as
opposed to any reserve for deferred Taxes established to reflect timing
differences between book and Tax income) as shown on the Balance Sheet, and will
not exceed such reserve as adjusted for the passage of time through the Closing
Date in accordance with the past custom and practice of the Company in filing
their Tax Returns.

          (e) SCHEDULE 3.19 hereto contains a list of all jurisdictions (whether
foreign or domestic) to which any Tax is properly payable by the Company.


<PAGE>   27
                                      -21-


     3.20. EMPLOYEES. SCHEDULE 3.20 sets forth a true and complete list of (a)
the names, titles, annual salaries and other compensations of all employees of
the Company and (b) the wage rates for non-salaried employees of the Company (by
classification). None of such employees and no other employee of the Company has
indicated to the Company or a Seller that he or she intends to resign or retire
as a result of the transactions contemplated by this Agreement or otherwise.
Except as set forth in SCHEDULE 3.20: (a) the Company is not a party to or
otherwise bound by any employment agreement; (b) there are no grievances,
disputes or controversies pending or, to the best knowledge of the Company and
Sellers, threatened between the Company and any of its present or former
employees or independent contractors or any person or entity representing any
such employee or independent contractor, and the Company is not currently
subject to any claims by present or former employees or independent contractors,
including, without limitation, claims for wages, salaries, commissions or
benefits; (c) the Company has not encountered any organizational efforts or
demands for collective bargaining by any labor union or labor organization or
been a party to any collective bargaining or labor agreement; and (d) on or
before the date hereof, the Company paid or otherwise made provisions for
payment of all amounts due to all of its present or former employees and
independent contractors, including, without limitation, straight time and
overtime pay, vacation and sick pay, fringe (other than pension) benefits,
severance pay and disability payments, and the Company has paid over to the
appropriate Governmental agencies or other appropriate persons or entities all
withheld taxes, social security and other payments due or accrued through the
date hereof.

     3.21. Environmental Compliance.
           ------------------------

          (a) ENVIRONMENTAL DEFINITIONS. The following terms, as used herein,
have the following meanings:

          "CERCLA" means the Comprehensive Environmental Response, Compensation
and Liability Act of 1980, as amended.

          "ENVIRONMENTAL LAWS" means any and all federal, state, local and
foreign statutes, laws (including common or case law), regulations, ordinances,
rules, judgments, judicial decisions, orders, decrees, codes, plans,
injunctions, permits, concessions, grants, franchises, licenses, agreements, or
other governmental approvals or restrictions, whether now or hereinafter in
effect, relating to human health, the environment or to emissions, discharges or
Releases of Hazardous Substances into the environment including, without
limitation, ambient air, surface water, ground water, or land, or otherwise
relating to the manufacture,


<PAGE>   28
                                      -22-

processing, distribution, use, treatment, storage, disposal, transport or
handling of any Hazardous Substances or the assessment, removal, containment or
remediation thereof.

          "ENVIRONMENTAL LIABILITIES" means all liabilities of the Company,
whether vested or unvested, contingent or fixed, actual or potential, known or
unknown, which (i) arise under or relate to articles covered by Environmental
Laws or arise in connection with or relate to any matter disclosed or required
to be disclosed in SCHEDULE 3.21 and (ii) arise from or relate in any way to
actions occurring or conditions existing before the Closing Date.

          "HAZARDOUS SUBSTANCE" means any and all pollutants and contaminants,
and any and all toxic, caustic, radioactive, biohazardous or otherwise hazardous
substance or waste that is regulated under Environmental Laws including
petroleum, its derivatives, by-products and other hydrocarbons.

          "REGULATED ACTIVITY" means any treatment, storage, recycling,
transportation or disposal of any Hazardous Substance.

          "RELEASE" means any spilling, leaking, pumping, pouring, emitting,
emptying, discharging, injecting, escaping, leaching, dumping or disposing into
the environment (including, without limitation, the abandonment or discarding of
barrels, containers, or other receptacles containing any Hazardous Substance).

          (b) ENVIRONMENTAL REPRESENTATIONS. Except as disclosed on SCHEDULE
3.21:

               (i) No notice, notification, demand, request for information,
          citation, summons or order has been issued, no complaint has been
          filed, no penalty has been assessed and no investigation or review is
          pending, or to the Company's or a Seller's knowledge, threatened by
          any governmental or other entity with respect to any (A) alleged
          violation by the Company of any Environmental Law or liability
          thereunder, (B) alleged failure by the Company to have any permit,
          certificate, license, approval, registration or authorization required
          under any Environmental Law, (c) Regulated Activity or (D) treatment,
          storage, recycling, or Release of Hazardous Substance.

               (ii) (A) The Company has not handled any Hazardous Substance on
          any property now or previously owned or leased by it; (B) no
          polychlorinated biphenyls or urea formaldehyde is or has been present
          at any property now or previously owned or leased by the Company; (C)
          no asbestos is or has been


<PAGE>   29

                                      -23-

          present at any property now or previously owned or leased by the
          Company; (D) there are no underground storage tanks for Hazardous
          Substances, active or abandoned, at any property now or previously
          owned or leased by the Company; (E) no Hazardous Substance has been
          Released at, or under any property now or previously owned or leased
          by the Company and (F) no Hazardous Substance has been Released or is
          present, in a reportable or threshold planning quantity, where such a
          quantity has been established by statute, ordinance, rule, regulation
          or order, at, on or under any property now or previously owned or
          leased by the Company.

               (iii) The Company has not transported or arranged for the
          transportation (directly or indirectly) of any Hazardous Substance to
          any location which is listed or proposed for listing under CERCLA, or
          on any similar state list or which is the subject of Federal, state or
          local enforcement actions or other investigations which may lead to
          claims against Buyer for clean-up costs, remedial work, damages to
          natural resources or for personal injury claims, including, but not
          limited to, claims under CERCLA.

               (iv) No oral or written notification of a Release of a Hazardous
          Substance has been filed by or on behalf of the Company and no
          property now or previously owned or leased by the Company is listed
          or, to the Company's or a Seller's knowledge, proposed for listing, on
          the National Priorities List promulgated pursuant to CERCLA or on any
          similar state list of sites requiring investigation or clean-up.

               (v) There are no environmental Liens on any of the Company's
          assets or on any property now or previously owned or leased by the
          Company, and no governmental actions have been taken or are in process
          that could subject any of such assets or property to such Liens. The
          Company would not be required to place any notice or restriction
          relating to the presence of Hazardous Substances at any property used
          in connection with the operation of its business in any deed to such
          property.

               (vi) There have been no environmental investigations, studies,
          audits, tests, reviews or other analyses conducted by or which are in
          the possession of the Company in relation to any property or facility
          now or previously owned or leased by the Company which have not been
          delivered to Buyer at least five (5) business days prior to the date
          hereof.


<PAGE>   30
                                      -24-

     3.22. CUSTOMERS AND SUPPLIERS. The Company has not received notice from or
is otherwise aware that any customer or group of customers who are under common
ownership or control and who accounted as a group for a material percentage of
the aggregate products and services furnished by the Company during the past 18
months has stopped or intends to stop purchasing the Company's products or
services, nor has the Company lost any supplier, or group of suppliers, which
accounted for a material percentage of the aggregate supplies purchased by the
Company during the past 18 months. All of the persons and entities to which the
Company is currently providing consulting or other services, or is currently
proposing to provide consulting or other services, for which services the
Company has received or expects to receive revenues in excess of $10,000, are
set forth on SCHEDULE 3.22. Neither the Company nor Sellers have any reason to
believe that the Company's business relationships with any person or entity
listed on SCHEDULE 3.22 are unsatisfactory or are to be terminated, whether as a
result of the sale of the Company to Buyer or otherwise. SCHEDULE 3.22 sets
forth the amounts the Company has received as of the date hereof as prepayments.

     3.23. TRANSACTIONS WITH AFFILIATES. Except as set forth in SCHEDULE 3.23,
there are no loans, leases, royalty agreements or other continuing transactions
between the Company and any Seller, any Affiliate of any Seller, or any member
of any Seller's family. Except as set forth in SCHEDULE 3.23, to the knowledge
of the Company and Sellers, none of the officers or directors of the Company or
Sellers (a) has any material direct or indirect interest in any entity which
does business with the Company; (b) has any direct or indirect interest in any
property, asset or right which is used by the Company in the conduct of its
business; or (c) has any contractual relationship with the Company other than
such relationships which occur from being an employee, officer, director or
stockholder of the Company.

     3.24. BANK ACCOUNTS; POWERS OF ATTORNEY. SCHEDULE 3.24 sets forth a true
and complete list of (a) all bank accounts, money market accounts and safe
deposit boxes of the Company and all Persons who are signatories thereunder or
who have access thereto, (b) the names of all Persons holding general or special
powers of attorney from the Company and a summary of the terms thereof and (c)
all Company credit cards and all credit accounts in the Company's name which
have been approved by the Company or of which the Company or any Seller is
aware.

     3.25. OTHER INFORMATION. None of the documents or information delivered to
Buyer by or under the direction of any of the Sellers in connection with the
transactions contemplated by this Agreement contains any untrue statement of a
material fact or omits to state a material fact necessary in order to make the
statements contained therein not misleading.


<PAGE>   31
                                      -25-

The financial projections relating to the Company for the year ending December
31, 1996 delivered to Buyer at the Closing constitute the Company's best
estimate of the information purported to be shown therein, and neither the
Company nor any Seller is aware of any fact or information that would lead it to
believe that such projections are incorrect or misleading in any material
respect.

     3.26. INTERCOMPANY ARRANGEMENTS. The Company does not own any note, bond,
debenture or other indebtedness, or is not otherwise a creditor, of any Seller
or any of its Affiliates. Since the Balance Sheet Date there has not been any
payment by the Company to such Seller or any of its Affiliates, charge by Seller
or any of its Affiliates to the Company or other transaction between the Company
and such Seller and any of its Affiliates, except in any such case in the
ordinary course of business of the Company consistent with past practice or as
set forth in SCHEDULE 3.26 or as contemplated by this Agreement.

     3.27. REPRESENTATIONS. The joint representations and warranties of the
Company and Sellers contained in this Agreement, disregarding all qualifications
and exceptions contained therein relating to materiality or Material Adverse
Effect, are true and correct with only such exceptions as would not in the
aggregate reasonably be expected to have a Material Adverse Effect.

                                   ARTICLE IV

                           ADDITIONAL REPRESENTATIONS
                            AND WARRANTIES OF SELLERS

     Each Seller, severally but not jointly, represents and warrants to, and
agrees with, Buyer as follows:

     4.01. TITLE TO AND VALIDITY OF SHARES. Such Seller now has, and on the
Closing Date will have, good and marketable title to and unrestricted power to
vote and sell the Shares designated as owned by such Seller opposite such
Seller's name on SCHEDULE 2.01, free and clear of any Lien and, upon purchase
and payment therefor and delivery to Buyer thereof in accordance with the terms
of this Agreement, Buyer will obtain good and marketable title to such Shares
free and clear of any Lien. All Shares owned by such Seller have been duly
authorized and validly issued and are fully paid and non-assessable. All Shares
to be sold by such Seller are registered in the name of such Seller.


<PAGE>   32
                                      -26-

     4.02. AUTHORITY. Such Seller has the legal power, right and authority to
enter into and perform this Agreement, and to perform each of his obligations
hereunder. The execution, delivery and performance of this Agreement by such
Seller (a) require no action by or in respect of, or filing with, or consent of,
any governmental body, agency or official or any other Person and (b) do not
contravene, or constitute a default under, any provision of applicable law or
regulation or of any agreement, judgment, injunction, order, decree or any other
instrument binding upon such Seller. This Agreement has been duly executed and
delivered by such Seller and constitutes a valid and binding obligation of such
Seller, enforceable in accordance with its terms, except as such enforcement is
limited by bankruptcy, insolvency and other similar laws affecting the
enforcement of creditors' rights generally, and by general equitable principles.

     4.03. POWER TO ACT AS TRUSTEE OR EXECUTOR. If such Seller is serving as
trustee or executor with respect to its Shares, such Seller is duly authorized
and empowered by the instruments creating such trust or trusts or by the will of
which such Seller is acting as executor and under applicable law to enter into
this Agreement with respect to the Shares held by such Seller and to consummate
the transactions contemplated herein.

     4.04. Access to Information; Accredited Investor Representation.
           ---------------------------------------------------------

          (a) Each Seller acknowledges that all documents, records and books
pertaining to the investment in the Buyer Stock have been made available for
inspection by him, his attorney, accountant, purchaser representative and tax
advisor (collectively, the "Advisors") and that the Seller has carefully
reviewed and understands the information contained therein;

          (b) Each Seller and the Advisors have had a reasonable opportunity to
ask questions of and receive answers from a person or persons acting on behalf
of Buyer concerning the offer and sale of the Buyer Stock and all such questions
have been answered to the full satisfaction of the Seller and his Advisors;

          (c) In evaluating the suitability of an investment in the Buyer, each
Seller has not relied upon any representation or other information (oral or
written) other than as contained in documents or answers to questions so
furnished to the Seller or his Advisors by the Buyer;

          (d) Each Seller, together with the Advisors, has such knowledge and
experience in financial, tax and business matters so as to enable him to utilize
the information made available to him in connection with the purchase of the
Buyer Stock to


<PAGE>   33
                                      -27-

evaluate the merits and risks of an investment in the Buyer Stock and to make an
informed investment decision with respect thereto;

          (e) Each Seller has adequate means of providing for his current needs
and foreseeable contingencies and has no need for his investment in the Buyer
Stock to be liquid;

          (f) Each Seller acknowledges that he or she has previously received
each SEC Report (as hereinafter defined) and has had a reasonable opportunity to
ask questions of and receive answers from a person or persons acting on behalf
of Buyer concerning such documents, and all such questions have been answered to
the full satisfaction of the Seller and his Advisors.

     4.05. PURCHASE FOR INVESTMENT. Each Seller is acquiring the shares of Buyer
Stock for investment for his own account and not with a view to, or for sale in
connection with, any distribution thereof. Each Seller agrees that the shares of
Buyer Stock acquired by such Seller may not be sold, transferred or otherwise
disposed of unless such shares are registered with the Securities and Exchange
Commission and the securities regulatory authorities of certain states or unless
an exemption from such registration is available.

                                    ARTICLE V

                     REPRESENTATIONS AND WARRANTIES OF BUYER

     Buyer hereby represents and warrants to the Company and Sellers that:

     5.01. ORGANIZATION AND EXISTENCE. Buyer is a corporation duly incorporated,
validly existing and in good standing under the laws of the Commonwealth of
Massachusetts and has all corporate powers and all material governmental
licenses, authorizations, consents and approvals required to carry on its
business as now conducted.

     5.02. CORPORATE AUTHORIZATION. The execution, delivery and performance by
Buyer of this Agreement and the consummation by Buyer of the transactions
contemplated hereby are within the corporate powers of Buyer and have been duly
authorized by all necessary corporate action on the part of Buyer. This
Agreement constitutes a valid and binding agreement of Buyer.

     5.03. GOVERNMENTAL AUTHORIZATION. The execution, delivery and performance
by Buyer of this Agreement require no action by or in respect of, or filing
with, any governmental


<PAGE>   34
                                      -28-

body, agency, official or authority other than compliance with any applicable
requirements of the 1934 Act.

     5.04. NON-CONTRAVENTION. The execution, delivery and performance by Buyer
of this Agreement do not and will not (i) contravene or conflict with the
corporate charter or by-laws of Buyer or (ii) assuming compliance with the
matters referred to in Section 4.03, contravene or conflict with any provision
of any law, regulation, judgment, injunction, order or decree binding upon
Buyer.

     5.05. FINDERS' FEES. Except for Chestnut Partners, Inc., whose fees will be
paid by Buyer, there is no investment banker, broker, finder or other
intermediary which has been retained by or is authorized to act on behalf of
Buyer who might be entitled to any fee or commission from the Company or any
Affiliate thereof upon consummation of the transactions contemplated by this
Agreement.

     5.06. PURCHASE FOR INVESTMENT. Buyer is purchasing the Shares for
investment for its own account and not with a view to, or for sale in connection
with, any distribution thereof.

     5.07. LITIGATION. There is no action, suit, investigation or proceeding
pending against, or to the knowledge of Buyer threatened against or affecting,
Buyer before any court or arbitrator or any governmental body, agency or
official which in any manner challenges or seeks to prevent, enjoin, alter or
materially delay the transactions contemplated hereby.

     5.08. SEC FILINGS. Buyer has made available to the Sellers a correct and
complete copy of each report, schedule, registration statement and definitive
proxy statement filed by Buyer with the Securities Exchange Commission ("SEC")
on or after November 22, 1995 (the "SEC Reports") which are all the forms,
reports and documents required to be filed by Buyer with the SEC since November
22, 1995. As of their respective dates, the SEC Reports complied in all material
respects with the requirements of the 1934 Act or the Securities Act of 1933, as
amended (the "1933 Act"), as the case may be, and the rules and regulations of
the SEC applicable thereto and did not contain any untrue statement of a
material fact or omit to state a material fact necessary in order to make the
statements made therein, in light of the circumstances under which they were
made, not misleading. Each of the consolidated financial statements (including,
in each case, any related notes thereto) contained in the SEC Reports complied
as to form in all material respects with applicable accounting requirements and
with the published rules and regulations of the SEC with respect thereto, had
been prepared in accordance with generally accepted accounting principles
("GAAP") applied on a consistent basis throughout the periods involved (except
as may be


<PAGE>   35
                                      -29-

indicated in the notes thereto or, in the case of the unaudited statements, as
permitted by the SEC) and each fairly presented the consolidated financial
position of Buyer and its consolidated subsidiaries in all material respects as
at the respective dates thereof and the consolidated results of its operations
and cash flows for the periods indicated (subject, in the case of the unaudited
interim financial statements, to normal audit adjustments, which were not and
are not expected, individually or in the aggregate, to be material in amount).

     Except as disclosed in the SEC Reports, (a) Buyer and its subsidiaries have
conducted their businesses only in the ordinary course and in a manner
consistent with past practice and (b) there has not been any transaction,
commitment, dispute or other event or condition (financial or otherwise) of any
character (whether or not in the ordinary course of business), individually or
in the aggregate, having or which could reasonably be expected to have a
Material Adverse Effect on Buyer.

     5.09. BUYER STOCK. The authorized capital stock of Buyer consists of
25,000,000 shares of common stock, of which 7,873,804 shares are issued and
outstanding as of July 31, 1996, and 5,000,000 shares of Preferred Stock, of
which no shares are issued or outstanding. The Buyer Stock to be issued to the
Sellers, when issued, sold and delivered in accordance with the terms of this
Agreement, will be duly and validly issued, fully paid, non-assessable, not
subject to any preemptive rights and free and clear of all liens, claims and
encumbrances.

                                   ARTICLE VI

                        COVENANTS OF THE COMPANY, SELLERS
                               AND THE PARTNERSHIP

     The Company and each Seller agree that:

     6.01. RESIGNATIONS. The Company will deliver to Buyer the resignations of
all officers and directors of the Company from their positions as officers
and/or directors with the Company at or prior to the Closing Date, unless
otherwise specified by Buyer.

     6.02. CONFIDENTIALITY. Sellers and their Affiliates will hold, and will use
their best efforts to cause their respective officers, directors, employees,
accountants, counsel, consultants, advisors and agents to hold, in confidence,
unless compelled to disclose by judicial or administrative process or by other
requirements of law, all confidential documents


<PAGE>   36
                                      -30-

and information concerning Buyer furnished to Sellers or their Affiliates in
connection with the transactions contemplated by this Agreement, and (after the
Closing Date) all confidential documents and information concerning the Company,
except to the extent that such information can be shown to have been (i)
previously known on a nonconfidential basis by Sellers, (ii) in the public
domain through no fault of Sellers or (iii) later lawfully acquired by Sellers
from sources other than the Company or Buyer; PROVIDED that Sellers may disclose
such information to their respective officers, directors, employees,
accountants, counsel, consultants, advisors and agents in connection with the
transactions contemplated by this Agreement so long as such persons are informed
by Sellers of the confidential nature of such information and are directed by
Sellers to treat such information confidentially. The obligation of Sellers and
their Affiliates to hold any such information in confidence shall be satisfied
if they exercise the same care with respect to such information as they would
take to preserve the confidentiality of their own similar information.

     6.03. AFFILIATE AGREEMENTS. The Company shall deliver to Buyer on or prior
to the Closing Date a letter from Seller's Counsel, satisfactory in form and
substance to Buyer's Counsel, which, based upon discussion with the Company and
such inquiries as such firm deems necessary, shall identify all persons who, at
the date of this Agreement, such firm believes may be deemed to be "affiliates"
of the Company as such term is used in and for the purposes of Accounting Series
Releases 130 and 135, as amended, of the Securities and Exchange Commission, and
defined in Rule 144(a)(1) of the Securities Act of 1933, as amended, and who
will become the beneficial owners of shares of Buyer Stock pursuant to the
transactions contemplated by this Agreement (each such person being referred to
as a "Company Affiliate"). The Company shall cause each of the Company
Affiliates to execute and deliver to Buyer on the Closing Date, a written
agreement (the "Affiliate Agreement") satisfactory to Buyer and substantially in
the form of EXHIBIT A hereto, including provisions indicating that such Company
Affiliate (i) has not offered to sell, sold or otherwise disposed of any Shares
in the 30 day period prior to the date hereof, (ii) will not offer to sell, sell
or otherwise dispose of any shares of Buyer Stock, except pursuant to an
effective registration statement or in compliance with an available exemption
from the registration requirements of the Securities Act (for which such Seller
shall provide Buyer with an opinion of counsel satisfactory to Buyer that the
securities being sold thereby may be publicly sold without registration under
the Securities Act), and (iii) will not offer to sell, sell or otherwise dispose
of any shares of Buyer Stock until Buyer shall have publicly released financial
results covering a period of at least 30 days of combined operations of Buyer
and the Company.

     6.04. TAX COVENANTS. The Company and the Sellers shall provide Buyer with a
clearance certificate or similar document(s) which may be required by any state
Taxing


<PAGE>   37
                                      -31-

Authority in order to mitigate, reduce or relieve any obligations of Buyer to
withhold any portion of the Purchase Price. The Company will pay when due any
and all sales, use, transfer and documentary taxes and recording and filing fees
incurred in connection with the transactions contemplated by this Agreement.

     6.05. [Intentionally Omitted]

     6.06. COVENANT OF THE PARTNERSHIP. The Partnership covenants and agrees to
take such action as shall be necessary to cause the Purchase Real Estate to be
conveyed on the Closing Date in accordance with the provisions of the Real
Estate Conveyance Documents. The Partnership further agrees to indemnify and
hold Buyer and the Company harmless against any commission which may become
payable by the Partnership upon the conveyance of the Purchase Real Estate to
Buyer pursuant to the Real Estate Conveyance Documents.

     6.07. APPROVAL OF PARACHUTE PAYMENTS. With respect to all payments that
would possibly constitute "excess parachute payments" (within the meaning of
Section 280G of the Code) but for the exceptions set forth in Sections
280G(b)(4) and 280G(b)(5) of the Code, the Company shall obtain the shareholder
approval described in Section 280G(b)(5)(B) of the Code.

     6.08. REORGANIZATION STATUS. Each Seller shall consistently treat for all
United States federal income tax purposes Buyer's purchase of Shares from
Sellers in exchange for Buyer Stock that is described in Section 2.01 hereof as
a reorganization, within the meaning of Section 368(a)(1)(B) of the Code (the "B
Reorganization"), and each Seller shall determine its United States federal
income tax attributes of the Buyer Stock that is received in accordance with
Section 358(a) and Section 1223(1) of the Code.

     6.09. SALE OR EXCHANGE STATUS. The Partnership (and each partner of the
Partnership) shall consistently treat for all United States federal income tax
purposes Buyer's purchase of the Purchase Real Estate from the Partnership that
is described in Section 2.02(e) hereof as a sale or exchange, within the meaning
of Section 1001 of the Code, which is separate and apart (although concurrent
with) the B Reorganization.

     6.10. SATISFACTION OF BUYER'S WITHHOLDING OBLIGATION. Each of the Sellers
other than Miller covenant and agree that he or she shall pay to the Buyer, in
immediately available funds (through wire transfer or federal funds check) not
later than 12:00 noon, Eastern Standard Time, on the Lapse Date (as defined
below), the federal, state, local and foreign tax withholding amounts
attributable to the Buyer Stock issued to him or her with respect to


<PAGE>   38
                                      -32-

the Option Shares, including without limitation federal, state, local and
foreign income tax, Social Security and Medicare tax withholding and similar
amounts (excluding the employer's portion of such amounts), at the applicable
tax withholding rates, all as determined by Buyer and its accountants. Each of
the Sellers other than Miller agree to cooperate fully and to follow any
reasonable instructions with respect to such tax withholding obligation, and
each understands that the fair market value of the Buyer Stock received in
exchange for the Option Shares must be reported as compensation for tax
purposes, such compensation being reported as of the Lapse Date. For purposes of
this Section 6.10, Lapse Date shall mean the first business day following the
date the Buyer Stock issued to such person pursuant to this Agreement is no
longer subject to a restriction on transfer pursuant to the "pooling of
interests" accounting rules.

                                   ARTICLE VII

                               COVENANTS OF BUYER

     Buyer agrees that:

     7.01. CONFIDENTIALITY. Prior to the Closing Date and after any termination
of this Agreement, Buyer and its Affiliates will hold, and will use their best
efforts to cause their respective officers, directors, employees, accountants,
counsel, consultants, advisors and agents to hold, in confidence, unless
compelled to disclose by judicial or administrative process or by other
requirements of law, all confidential documents and information concerning the
Company furnished to Buyer or its Affiliates in connection with the transactions
contemplated by this Agreement, except to the extent that such information can
be shown to have been (i) previously known on a nonconfidential basis by Buyer,
(ii) in the public domain through no fault of Buyer or (iii) later lawfully
acquired by Buyer from sources other than the Company; PROVIDED that Buyer may
disclose such information to its officers, directors, employees, accountants,
counsel, consultants, advisors and agents in connection with the transactions
contemplated by this Agreement so long as such Persons are informed by Buyer of
the confidential nature of such information and are directed by Buyer to treat
such information confidentially. The obligation of Buyer and its Affiliates to
hold any such information in confidence shall be satisfied if they exercise the
same care with respect to such information as they would take to preserve the
confidentiality of their own similar information. If this Agreement is
terminated, Buyer and its Affiliates will, and will use their best efforts to
cause their respective officers, directors, employees, accountants, counsel,
consultants, advisors and agents to, destroy or deliver to Seller, upon request,
all


<PAGE>   39
                                      -33-

documents and other materials, and all copies thereof, obtained by Buyer or its
Affiliates or on their behalf from a Seller, the Company in connection with this
Agreement that are subject to such confidence.

     7.02. ACCESS. The Company, on and after the Closing Date, will afford
promptly to Sellers and their agents reasonable access to their properties,
books, records, employees and auditors to the extent necessary to permit Seller
to determine any matter relating to its rights and obligations hereunder or to
any period ending on or before the Closing Date. Sellers will hold, and will use
their best efforts to cause their officers, directors, employees, accountants,
counsel, consultants, advisors and agents to hold, in confidence, unless
compelled to disclose by judicial or administrative process or by other
requirements of law, all confidential documents and information concerning the
Company provided to it pursuant to this Section 7.02.

     7.03. RESALE REGISTRATION STATEMENT. Buyer agrees to cause a registration
statement on Form S-3 under the Securities Act relating to the resale of the
Buyer Stock and the Partnership Stock (collectively, the "Registrable Shares")
to be filed pursuant to the Registration Rights Agreement as soon as practicable
following the date on which the Buyer is eligible to use such Form S-3, and in
any event no later than January 15, 1997, and agrees to use commercially
reasonable efforts to (i) have such registration statement declared effective as
soon as practicable thereafter and (ii) maintain the effectiveness of such
registration statement until the earlier of three (3) years from the Closing
Date and the date on which all Registrable Shares have been sold by Sellers;
provided, however, that Buyer shall not be required to take any action to cause
such registration statement to be declared effective by the Securities and
Exchange Commission at any time prior to the publication by Buyer of financial
results including at least thirty (30) days' post-closing combined operating
results of Buyer and the Company. In the event that at the time the filing of
such registration statement is undertaken or required to be undertaken, Buyer
fails to qualify for use of Form S-3 for purposes of registering for resale the
Registrable Shares, Buyer shall cause a registration statement on Form S-1 to be
filed as soon as practicable thereafter and to use commercially reasonable
efforts to (i) have such registration statement declared effective as soon as
practicable and (ii) maintain the effectiveness of such registration statement
until the earlier of (a) three (3) years from the Closing Date, (b) the date on
which all Registrable Shares have been sold by Sellers and (c) the date as of
which Buyer qualifies for use of Form S-3 and such registration statement shall
have been converted into a registration statement on Form S-3.


<PAGE>   40
                                      -34-

     7.04. ANNUAL REPORT ON FORM 10-K. Buyer agrees to file in a timely manner
all reports and other documents required of the Company under the 1934 Act,
including, without limitation, its Annual Report on Form 10-K for the fiscal
year ended June 30, 1996.

     7.05. AFFILIATE AGREEMENTS. Buyer shall use its best efforts to cause each
person who, at the date of this Agreement, Buyer believes may be deemed to be
"affiliates" of Buyer as such term is used in and for the purposes of Accounting
Series Releases 130 and 135, as amended, of the Securities and Exchange
Commission, and defined in Rule 144(a)(1) of the Securities Act of 1933, as
amended (each a "Buyer Affiliate"), to execute and deliver (i) on the date of
this Agreement and (ii) on the Closing Date, an Affiliate Agreement
substantially in the form of EXHIBIT A hereto.

     7.06. BONUSES. With respect to each individual who is a full-time employee
of the Company on the Closing Date, and remains an employee of the Company until
December 31, 1996, Buyer shall cause the Company to (a) pay a bonus for the year
ending December 31, 1996 and (b) make a contribution for the year ending
December 31, 1996 to such employee's pension plan in such amounts and at such
amounts and at such times as shall be consistent with the past practices of the
Company, as set forth on SCHEDULE 7.06; provided, however, that in the event
that the Company realizes levels of income and expenses for the year ending
December 31, 1996 comparable to those realized in 1995, the bonus payments and
pension plan contributions required hereby for 1996 shall not be less than
(either in the aggregate or with respect to amounts paid to specific employees)
the bonuses and pension plan contributions made by the Company in 1995.

     7.07. HISTORICAL BONUSES. On the Closing Date, each of Martin J. Miller,
Howard Tag, Peter Malamis, Laurie Hughes and Mary Ann Lloyd shall be paid their
accrued bonuses of the Company, as set forth on SCHEDULE 7.07.

     7.08. VACATION. Following the Closing, Buyer shall cause the Company to
continue to make available to employees of the Company vacation benefits
consistent with the policies of the Company in effect on the Closing Date, as
set forth on SCHEDULE 7.08, subject to such modifications (which modifications
shall not effect vacation through December 31, 1996) as the Board of Directors
of the Company deems appropriate. SCHEDULE 7.08 also sets forth all accrued but
unused vacation days of the Company's employees as of June 30, 1996.

     7.09. REORGANIZATION STATUS. Buyer shall consistently treat for all United
States federal income tax purposes Buyer's purchase of Shares from Sellers and
Raven in exchange for Buyer Stock that is described in Section 2.01 hereof as a
reorganization, within the meaning


<PAGE>   41
                                      -35-

of Section 368(a)(1)(B) of the Code (the "B Reorganization"), and Buyer shall
determine its United States federal income tax attributes of the acquired Shares
in accordance with Section 362(b) and Section 1223(2) of the Code. In addition,
Buyer shall consistently treat for all United States federal income tax purposes
Buyer's purchase of the Purchase Real Estate from the Partnership that is
described in Section 2.02(e) hereof as a sale or exchange, within the meaning of
Section 1001 of the Code, which is separate and apart (although concurrent with)
the B Reorganization.

     7.10. BUSINESS CONTINUITY. Buyer shall continue to conduct the historic
business of the Company and shall continue to use the historic assets of the
Company in a business.

                                  ARTICLE VIII

                            COVENANTS OF ALL PARTIES

     The parties hereto agree that:

     8.01. BEST EFFORTS. Subject to the terms and conditions of this Agreement,
each party will use its best efforts to take, or cause to be taken, all actions
and to do, or cause to be done, all things necessary or desirable under
applicable laws and regulations to consummate the transactions contemplated by
this Agreement. Sellers and Buyer each agree to execute and deliver such other
documents, certificates, agreements and other writings and to take such other
actions as may be necessary or desirable in order to consummate or implement
expeditiously the transactions contemplated by this Agreement.

     8.02. CERTAIN FILINGS. The Company, Sellers and Buyer shall cooperate with
each other (a) in determining whether any action by or in respect of, or filing
with, any governmental body, agency, official or authority is required, or any
actions, consents, approvals or waivers are required to be obtained from parties
to any material contracts, in connection with the consummation of the
transactions contemplated by this Agreement and (b) in taking such actions or
making any such filings, furnishing information required in connection therewith
and seeking timely to obtain any such actions, consents, approvals or waivers.

     8.03. PUBLIC ANNOUNCEMENTS. The parties agree to consult with each other
before issuing any press release or making any public statement with respect to
this Agreement or the transactions contemplated hereby and, except as may be
required by applicable law or


<PAGE>   42
                                      -36-

any listing agreement with any national securities exchange, will not issue any
such press release or make any such public statement prior to such consultation.

     8.04. POOLING. Sellers, the Company and Buyer shall use commercially
reasonable efforts and shall cooperate fully to allow the transactions
contemplated by this Agreement to be accounted for as a "pooling of interests"
in accordance with generally accepted accounting principles which shall be
acceptable to the U.S. Securities and Exchange Commission.

                                   ARTICLE IX

                                EMPLOYEE BENEFITS

     9.01. EMPLOYEE BENEFITS DEFINITIONS. The following terms, as used herein,
having the following meanings:

     "BENEFIT ARRANGEMENT" means each employment, severance or other similar
contract, arrangement or policy (written or oral) and each plan or arrangement
(written or oral) providing for severance benefits, insurance coverage
(including any self-insured arrangements), workers' compensation, disability
benefits, supplemental unemployment benefits, vacation benefits, retirement
benefits or for deferred compensation, profit-sharing, bonuses, stock options,
stock appreciation rights or other forms of incentive compensation or
post-retirement insurance, compensation or benefits which (i) is not an Employee
Plan, (ii) is entered into, maintained or contributed to, as the case may be, by
Sellers or any of their Affiliates and (iii) covers any employee or former
employee of the Company.

     "EMPLOYEE PLANS" means each "employee benefit plan", as such term is
defined in Section 3(3) of ERISA, that (i) is subject to any provision of ERISA
and (ii) is maintained or contributed to by the Company or any of its ERISA
Affiliates, as the case may be.

     "ERISA" means the Employment Retirement Income Security Act of 1974, as
amended.

     "ERISA AFFILIATE" of any entity means any other entity that, together with
such entity, would be treated as a single employer under Section 414 of the
Code.

     "MULTIEMPLOYER PLAN" means each Employee Plan that is a multiemployer plan,
as defined in Section 3(37) of ERISA.


<PAGE>   43
                                      -37-

     9.02. ERISA REPRESENTATIONS. The Company and each Seller, jointly and
severally, hereby represent and warrant to Buyer that:

          (a) SCHEDULE 9.02 lists each Employee Plan that covers any employee of
the Company, copies or descriptions of all of which have previously been made
available or furnished to Buyer. With respect to each Employee Plan, the Company
has provided a copy of each of Employee Plans and related plan documents
(including trust documents and insurance policies or contracts), with respect to
each Employee Plan subject to ERISA reporting requirements, copies of the Form
5500 reports filed for the last three plan years, and an accurate summary
description of such plan. The Company has provided Buyer with complete age,
salary, service and related data as of the most recent practicable date for
employees of the Company.

          (b) SCHEDULE 9.02 also includes a list of each Benefit Arrangement of
the Company, copies and descriptions of which have been made available or
furnished previously to Buyer.

          (c) None of the Employee Plans or other arrangements listed on
SCHEDULE 9.02 covers any non-United States employee or former employee of the
Business.

          (d) No "prohibited transaction", as defined in Section 406 of ERISA or
Section 4975 of the Code, has occurred with respect to any Employee Plan.

          (e) No Employee Plan is a Multiemployer Plan and no Employee Plan is
subject to Title IV of ERISA. The Company and its Affiliates have not incurred
any liability under Title IV or ERISA arising in connection with the termination
of any plan covered or previously covered by Title IV of ERISA.

          (f) Each Employee Plan which is intended to be qualified under Section
401(a) of the Code is so qualified and has been so qualified during the period
from its adoption to date, and each trust forming a part thereof is exempt from
tax pursuant to Section 501(a) of the Code. The Company has furnished to Buyer
copies of the most recent Internal Revenue Service determination letters with
respect to each such plan as to its qualified status under the Code, including
all amendments to the Code effected by the Tax Reform Act of 1986 and subsequent
legislation. Each Employee Plan has been maintained in compliance with its terms
and with the requirements prescribed by any and all statutes, orders, rules and
regulations, including but not limited to ERISA and the Code, which are
applicable to such plan.


<PAGE>   44
                                      -38-

          (g) Each Employee Plan and each Benefit Arrangement has been
maintained in compliance with its terms and with the requirements prescribed by
any and all statutes, orders, rules and regulations which are applicable to such
Benefit Arrangement.

          (h) With respect to the employees and former employees of the Company,
there are no employee post-retirement medical or health plans in effect, except
as required by Section 4980B of the Code or as set forth in SCHEDULE 9.02.

          (i) Except as set forth in SCHEDULE 9.02 or as provided elsewhere
herein, all contributions and payments accrued under each Employee Plan and
Benefit Arrangement, determined in accordance with prior funding and accrual
practices, as adjusted to include proportional accruals for the period ending on
the Closing Date, will be discharged and paid on or prior to the Closing Date.
Except as disclosed in writing to Buyer prior to the date hereof, there has been
no amendment to, written interpretation of or announcement (whether or not
written) by the Company or any of its ERISA Affiliates relating to, or change in
employee participation or coverage under, any Employee Plan or Benefit
Arrangement that would increase materially the expense of maintaining such
Employee Plan or Benefit Arrangement above the level of the expense incurred in
respect thereof for the fiscal year ended prior to the date hereof.

          (j) Except as set forth in SCHEDULE 9.02, there is no contract,
agreement, plan or arrangement covering any employee or former employee of the
Company that, individually or collectively, could give rise to the payment of
any amount that would not be deductible pursuant to the terms of Section 280G of
the Code.

          (k) No tax under Section 4980B of the Code has been incurred in
respect of any Employee Plan that is a group health plan, as defined in Section
5000(b)(1) of the Code.

          (l) Except as set forth in SCHEDULE 9.02 or this Agreement, no
employee of the Company will become entitled to any bonus, retirement, severance
or similar benefit or enhanced benefit solely as a result of the transactions
contemplated hereby.

          (m) The Company does not have, nor is it reasonably expected to have,
any liability under Title IV of ERISA.

     9.03. NO THIRD PARTY BENEFICIARIES. No provision of this Article IX shall
create any third party beneficiary or other rights in any employee or former
employee (including any beneficiary or dependent thereof) of the Company in
respect of continued employment (or


<PAGE>   45
                                      -39-

resumed employment) with the Company and no provision of this Article IX shall
create any such rights in any such Persons in respect of any benefits that may
be provided, directly or indirectly, under any Employee Plan or Benefit
Arrangement or any plan or arrangement that may be established by Buyer or any
of its Affiliates. Subject to the provisions of Section 7.06 hereof, no
provision of this Agreement shall constitute a limitation on rights to amend,
modify or terminate after the Closing Date any Employee Plan or Benefit
Arrangement.

                                    ARTICLE X

                              CONDITIONS TO CLOSING

     10.01. CONDITIONS TO THE OBLIGATIONS OF EACH PARTY. The obligations of
Buyer, the Company and Sellers to consummate the Closing are subject to the
satisfaction of the following conditions:

          (a) No proceeding challenging this Agreement or the transactions
contemplated hereby or seeking to prohibit, alter, prevent or materially delay
the Closing shall have been instituted by any Person before any court,
arbitrator or governmental body, agency or official and be pending.

          (b) Each other party shall have executed and delivered each of the
Ancillary Agreements to be entered into by it at Closing, in each case
substantially in the form attached as an exhibit to this Agreement.

          (c) All actions by or in respect of or filings with any governmental
body, agency, official or authority required to permit the consummation of the
Closing shall have been obtained.

          (d) The transfer to the Company (or Buyer, as designated by Buyer) of
good and clean record and marketable title to the Purchase Real Estate subject
only to the Permitted Exceptions shall have been consummated.

          (e) There shall have been obtained the consent of the landlord, if
required, with respect to any leased real property.

          (f) There shall have been obtained the consent of applicable
condominium associations.


<PAGE>   46
                                      -40-

          (g) Agreement as to a settlement sheet setting forth all costs,
expenses and closing adjustments relating to the conveyance of the Purchase Real
Estate.

          (h) Satisfaction of all requirements for the issuance of the title
insurance policy described in Section 10.02.

          (i) [Intentionally Omitted.]

     10.02. CONDITIONS TO OBLIGATION OF BUYER. The obligation of Buyer to
consummate the Closing is subject to the satisfaction of the following further
conditions:

          (a)(i) the Company and each Seller shall have performed in all
material respects all of his or its obligations hereunder required to be
performed on or prior to the Closing Date, (ii) the representations and
warranties of the Company and each Seller contained in this Agreement at the
time of its execution and delivery and in any certificate or other writing
delivered by the Company or a Seller pursuant hereto, disregarding all
qualifications and exceptions contained therein relating to materiality or
Material Adverse Effect, shall be true at and as of the Closing Date, as if made
at and as of such date with only such exceptions as would not in the aggregate
reasonably be expected to have a Material Adverse Effect and (iii) Buyer shall
have received a certificate signed by the President of the Company and by each
Seller to the foregoing effect.

          (b) No court, arbitrator or governmental body, agency or official
shall have issued any order, and there shall not be any statute, rule or
regulation, restraining the effective operation by Buyer of the business of the
Company after the Closing Date, and no proceeding challenging this Agreement or
the transactions contemplated hereby or seeking to prohibit, alter, prevent or
materially delay the Closing shall have been instituted by any Person before any
court, arbitrator or governmental body, agency or official and be pending.

          (c) Buyer shall have received an opinion of Sellers' Counsel, dated
the Closing Date, to the effect specified on EXHIBIT G and with respect to such
other matters as Buyer may reasonably request. In rendering such opinion, such
counsel may rely upon certificates of public officers, as to matters governed by
the laws of jurisdictions other than Virginia or the federal laws of the United
States of America, upon opinions of counsel reasonably satisfactory to Buyer,


<PAGE>   47
                                      -41-

copies of which shall be contemporaneously delivered to Buyer, and as to matters
of fact, upon certificates of officers of Seller and the Company.

          (d) Each of the Sellers and the Company shall have executed and
delivered each of the Ancillary Agreements to be entered into by them or it at
the Closing, in each case substantially in the form attached as an exhibit to
this Agreement.

          (e) Buyer shall have received all other closing documents specified in
Section 2.02 of this Agreement and all other closing documents that it may
reasonably request, all in form and substance reasonably satisfactory to Buyer.

          (f) Price Waterhouse LLP shall have delivered to Buyer its written
opinion that it has no basis for believing that the transactions contemplated by
this Agreement shall not be accounted for as a "pooling of interests" in
accordance with generally accepted accounting principles, Ross Langan &
McKendree shall have delivered to the Company its written representation that it
has no basis for believing that the Company has taken any action or agreed to
take any action which would prevent Buyer from accounting for the business
combination as a "pooling of interests", and Buyer shall have no reason to
believe that such accounting treatment will not be accepted by the Securities
and Exchange Commission.

          (g) The Company shall deliver to Buyer a properly executed statement
in a form reasonably requested by Buyer for purposes of satisfying Buyer's
obligations under Treasury Regulation [Section]1.1445-2(c)(3).

          (h) Sellers shall have provided Buyer at Buyer's expense, the
following, which shall each be satisfactory to Buyer:

          (i) An owner's title insurance policy issued by Chicago Title
          Insurance Corporation, for all of the Purchase Real Estate; and

          (ii) A certificate listing Buyer as owner of the Purchase Real Estate
          on the master fire insurance policy for the entire Condominium
          containing the Purchase Real Estate and any other insurance policies
          set forth in Sections 6.1-6.4 of the Condominium Bylaws.


<PAGE>   48
                                     -42-

          (i) Sellers shall have provided to Buyer, at Sellers' expense, the
following, which shall each be satisfactory to Buyer:

          (i) A properly executed Certificate of Resale for the Purchase Real
          Estate in the form attached to the Declaration as Exhibit A with
          respect to each of the units comprising the Purchase Real Estate;

          (ii) A so-called "Condominium Resale Package" with respect to each of
          the units comprising the Purchase Real Estate;

          (iii) A statement with respect to each of the units comprising the
          Purchase Real Estate from the Board of Directors of the Condominium as
          described in Section 5.2 of the Condominium Bylaws;

          (iv) Blueprints and recorded plans for each unit comprising the
          Purchase Real Estate;

          (v) An estoppel letter from the landlord for real property leased by
          the Company verifying that such leases are in good standing and that
          no defaults or events which could lead to a default are outstanding;

          (vi) An insurance certificate for all leased real property;

          (vii) All Real Estate Conveyance Documents; and

          (viii) A written appraisal of the fair market value of the Purchase
          Real Estate as of a date within 30 days prior to the Closing Date from
          an appraisal firm satisfactory to Buyer which appraisal concludes that
          the fair market value of the Purchase Real Estate is in excess of the
          sum of (i) the principal and accrued interest on the mortgage which
          encumbers said property plus (ii) the expenses in connection with the
          transfer of the Purchase Real Estate plus (iii) the fair market value
          of the Partnership Stock tendered pursuant to Section 2.02(e) hereof.

     10.03. CONDITIONS TO OBLIGATION OF SELLERS. The obligation of Sellers to
consummate the Closing is subject to the satisfaction of the following further
conditions:

          (a)(i) Buyer shall have performed in all material respects all of its
obligations hereunder required to be performed by it at or prior to the Closing


<PAGE>   49
                                      -43-

Date, (ii) the representations and warranties of Buyer contained in this
Agreement at the time of its execution and delivery and in any certificate or
other writing delivered by Buyer pursuant hereto shall be true in all material
respects at and as of the Closing Date, as if made at and as of such date and
(iii) Sellers shall have received a certificate signed by the Chief Financial
Officer of Buyer to the foregoing effect.

          (b) No proceeding challenging this Agreement or the transactions
contemplated hereby or seeking to prohibit, alter, prevent or materially delay
the Closing shall have been instituted by any Person before any court,
arbitrator or governmental body, agency or official and be pending.

          (c) Sellers shall have received an opinion of Buyer's Counsel, dated
the Closing Date, to the effect specified in Sections 5.01 through 5.04 and 5.07
and with respect to such other matters as Sellers shall reasonably request. In
rendering such opinion, such counsel may rely upon certificates of public
officers, as to matters governed by the laws of jurisdictions other than
Massachusetts or the federal laws of the United States of America, upon opinions
of counsel reasonably satisfactory to Seller, copies of which shall be
contemporaneously delivered to Seller, and as to matters of fact, upon
certificates of officers of Buyer.

          (d) Buyer shall have executed and delivered each of the Ancillary
Agreements to be entered into by it at the Closing, in each case substantially
in the form attached as an exhibit to this Agreement.

          (e) Sellers shall have received all items specified in Section 2.02 of
this Agreement and all other closing documents that they may reasonably request,
all in form and substance reasonably satisfactory to them.

          (f) Miller and Raven shall have received evidence satisfactory to them
of the release of any personal guarantees by such persons of any loan or
mortgage obligations of the Partnership with respect to the Purchase Real
Estate, all of which are set forth on Schedule 10.03.

          (g) The Company shall have repaid Miller the principal balance and
accrued and unpaid interest (totaling $199,767.74) on those demand promissory
notes in the face amount of $188,300.


<PAGE>   50
                                      -44-

          (h) Sellers shall have received an opinion of Sellers' Counsel and the
Company shall have received an opinion of Buyer's Counsel, dated the Closing
Date, to the effect that the Buyer's purchase of Shares from Sellers and Raven
in exchange for Buyer Stock that is described in Section 2.01 hereof will be
treated as a tax-free reorganization as described in Section 368 of the Code.

                                   ARTICLE XI

                            SURVIVAL; INDEMNIFICATION

     11.01. SURVIVAL. The covenants contained in this Agreement or in any
certificate or other writing delivered pursuant hereto or in connection herewith
shall survive the Closing and continue until the date set forth in each such
covenant. The agreements, representations and warranties contained in this
Agreement shall survive the Closing until the earlier of (i) the delivery by
Price Waterhouse LLP of its report on Buyer's financial statements for the
fiscal year ended June 30, 1997, and (ii) the one (1) year anniversary of the
Closing Date. Notwithstanding the preceding sentences, any covenant, agreement,
representation or warranty in respect of which indemnity may be sought under
Section 11.02 shall survive the time at which it would otherwise terminate
pursuant to the preceding sentences, if notice of the inaccuracy or breach
thereof giving rise to such right to indemnity shall have been given to the
party against whom such indemnity may be sought prior to such time.

    11.02. INDEMNIFICATION. (a) Each Seller, jointly and severally, hereby
indemnifies Buyer, its subsidiaries and its directors, officers, agents and
affiliates and, effective at the Closing, without duplication, the Company
(collectively the "Buyer Group") against and agrees to defend and hold them
harmless from any and all damage, loss, liability and expense (including without
limitation reasonable expenses of investigation and reasonable attorneys' fees
and expenses in connection with any action, suit or proceeding but excluding
indirect or consequential damages) ("Damages") incurred or suffered by Buyer or
the Company arising out of any misrepresentation or breach of warranty, covenant
or agreement made or to be performed by the Company or a Seller pursuant to this
Agreement (collectively, the "Claims").

          (b) Unless and until the Damages incurred by the Buyer Group exceed
$50,000, Buyer shall not be entitled to indemnification under this Section
11.02; provided, however, that once the damages exceed $50,000, the Buyer Group
shall be entitled to indemnification for the full amount of such Damages. The
maximum liability of each Seller


<PAGE>   51
                                      -45-

pursuant to paragraph (a) of this Section 11.02 shall be the amount of the
Purchase Price received by such Seller represented by the Escrow Shares.

          (c) Sellers shall have no right of indemnification, contribution or
subrogation against the Company with respect to any indemnification by any
Seller or Sellers under this Section 11.02 if the transactions contemplated by
this Agreement are consummated.

          (d) Buyer's claims for indemnification pursuant to paragraph (a) above
shall be satisfied solely from the shares of Buyer Stock held in escrow pursuant
to Section 2.02 (the "Escrow Shares") as follows:

               (i) Promptly after the earlier to occur of (a) the delivery by
          Price Waterhouse LLP of its report on Buyer's financial statements for
          the fiscal year ended June 30, 1997, or (b) the one (1) year
          anniversary of the Closing Date, the Escrow Shares shall be
          distributed to the Sellers, except that the portion of the Escrow
          Shares having a fair market value as of the Closing Date most nearly
          equal to the Damages incurred by the Buyer as to which a Claim shall
          have been previously and duly delivered to Sellers, shall continue to
          be withheld in escrow. The amount of such Damages shall be based upon
          a written certification of the Chief Executive Officer of Buyer to
          Sellers as to the amount of Damages incurred, together with supporting
          documentation. If Sellers disagree that a Claim has arisen or with the
          amount of Damages set forth in such certificate, and if Sellers and
          Buyer cannot reach a mutually satisfactory understanding with regard
          to the existence of a Claim or the amount of Damages within five (5)
          business days after delivery of the certificate to Sellers, the matter
          shall be promptly submitted to binding arbitration in Boston,
          Massachusetts in accordance with the rules of the American Arbitration
          Association. The balance of the Escrow Shares not so withheld shall be
          distributed to Sellers;

               (ii) The Escrow Shares not so distributed to Sellers pursuant to
          subsection 11.02(d)(i) shall be retained in escrow until such pending
          Claims are resolved; provided, however, that upon the disposition of
          any such Claim prior to the disposition of all such Claims, Buyer
          shall distribute to Sellers that amount of the Escrow Shares having a
          value as of the Closing Date in excess of 100% of the aggregate
          amounts of the remaining Damages incurred as determined above.

          (e) Buyer hereby indemnifies each Seller, its agents and affiliates
(the "Selling Group") against and agrees to defend and hold them harmless from
any and all Damages incurred or suffered by the Selling Group arising out of any
misrepresentation or breach of


<PAGE>   52
                                      -46-

warranty, covenant or agreement made or to be performed by Buyer pursuant to
this Agreement, such indemnity obligations to be satisfied by the Buyer by
issuing shares of its common stock having a value, as of the Closing Date, equal
to the amount of such Damages, provided, however, that such amount shall in no
event exceed $1,000,000.

          (f) Under no circumstances shall any Seller be required to compensate
Buyer or the Buyer Group with respect to any Damages incurred by the Buyer Group
in excess of the value of such Seller's interest in the Escrow Shares.

     11.03. PROCEDURES. The party seeking indemnification under Section 11.02
(the "Indemnified Party") agrees to give prompt notice to the party against whom
indemnity is sought (the "Indemnifying Party") of the assertion of any claim, or
the commencement of any suit, action or proceeding in respect of which indemnity
may be sought under such Section. The Indemnifying Party may, and at the request
of the Indemnified Party shall, participate in and control the defense of any
third party suit, action or proceeding at its own expense. The Indemnifying
Party shall not be liable under Section 11.02 for any settlement effected
without its consent of any claim, litigation or proceeding in respect of which
indemnity may be sought hereunder.

                                   ARTICLE XII

                             [Intentionally Omitted]

                                  ARTICLE XIII

                             [Intentionally Omitted]

                                   ARTICLE XIV

                                  MISCELLANEOUS

     14.01. NOTICES. All notices, requests and other communications to any party
hereunder shall be in writing (including telecopy or similar writing) and shall
be given,


<PAGE>   53
                                      -47-

if to Buyer, to:

                        PAREXEL International Corporation
                        195 West Street
                        Waltham, MA  02154
                        Attn:  William T. Sobo, Jr.

     with a copy to:

                        William J. Schnoor, Jr., Esq.
                        Testa, Hurwitz & Thibeault, LLP
                        High Street Tower
                        125 High Street
                        Boston, MA 02110
                        Telecopy: (617) 248-7100

if to the Company, to:

                        State and Federal Associates, Inc.
                        1101 King Street, Suite 600
                        Alexandria, VA 22314
                        Telecopy: (703) 683-2239

     with a copy to:    

                        Thomas J. Egan, Jr., Esq.
                        Baker & McKenzie
                        815 Connecticut Avenue, N.W., Suite 900
                        Washington, D.C. 20006
                        Telecopy: (202) 452-7073

if to a Seller:

                        at his or her address shown in
                        SCHEDULE 2.01


<PAGE>   54
                                     -48-

if to the Partnership, to:

                        S&FA of Alexandria Partnership
                        1101 King Street, Suite 600
                        Alexandria, VA 22314
                        Telecopy: (703) 683-2239

if to Adams, to:

                        Scott G. Adams, Esq., C.P.A.
                        Adams & Associates
                        P.O. Box 100
                        10 Oak Street
                        Boothbay Harbor, ME  04538
                        Telecopy:  (207) 633-4911

     14.02. AMENDMENTS; NO WAIVERS. (a) Any provision of this Agreement may be
amended or waived prior to the Closing Date if, and only if, such amendment or
waiver is in writing and signed by Buyer, the Company and Sellers.

          (b) No failure or delay by any party in exercising any right, power or
privilege hereunder shall operate as a waiver thereof nor shall any single or
partial exercise thereof preclude any other or further exercise thereof or the
exercise of any other right, power or privilege. The rights and remedies herein
provided shall be cumulative and not exclusive of any rights or remedies
provided by law.

     14.03. EXPENSES. All costs and expenses incurred in connection with this
Agreement shall be paid by the party incurring such cost or expense.

     14.04. SUCCESSORS AND ASSIGNS. The provisions of this Agreement shall be
binding upon and inure to the benefit of the parties hereto and their respective
successors and assigns; provided that no party may assign, delegate or otherwise
transfer any of his or its rights or obligations under this Agreement without
the consent of the other parties hereto, except that Buyer may transfer or
assign, in whole or from time to time in part, to one or more of its Affiliates,
the right to purchase all or a portion of the Shares, but no such transfer or
assignment will relieve Buyer of its obligations hereunder, and Buyer may
collaterally assign


<PAGE>   55
                                      -49-

its rights to receive payments pursuant to Article XI hereof or pursuant to the
Escrow Agreement.

     14.05. FURTHER ASSURANCES. From time to time after the Closing, (a) at the
request of Buyer and without further consideration, Sellers will execute and
deliver to Buyer such other documents, and take such other action, as Buyer may
reasonably request in order to consummate more effectively the transactions
contemplated hereby and to vest in Buyer good, valid and marketable title to the
Shares and (b) at the request of Sellers and without further consideration,
Buyer will execute and deliver to Sellers such other documents, and take such
other action, as Sellers may reasonable request in order to consummate more
effectively the transactions contemplated hereby.

     14.06. GOVERNING LAW. This Agreement shall be construed in accordance with
and governed by the law of the Commonwealth of Massachusetts, without regard to
the conflicts of law rules of such Commonwealth.

     14.07. COUNTERPARTS; EFFECTIVENESS. This Agreement may be signed in any
number of counterparts, each of which shall be an original, with the same effect
as if the signatures thereto and hereto were upon the same instrument. This
Agreement shall become effective when each party hereto shall have received a
counterpart hereof signed by the other parties hereto.

     14.08. ENTIRE AGREEMENT. This Agreement and the Ancillary Agreements
constitute the entire agreement between the parties with respect to the subject
matter hereof and supersede all prior agreements, understandings and
negotiations, both written and oral, between the parties with respect to the
subject matter hereof. No representation, inducement, promise, understanding,
condition or warranty not set forth herein has been made or relied upon by
either party hereto. Neither this Agreement nor any provision hereof is intended
to confer upon any Person other than the parties hereto any rights or remedies
hereunder.

     14.09. CAPTIONS. The captions herein are included for convenience of
reference only and shall be ignored in the construction or interpretation
hereof.

     14.10. JURISDICTION. Any action or proceeding seeking to enforce any
provision of, or based on any right arising out of, this Agreement may be
brought against any of the parties in the courts of the Commonwealth of
Massachusetts, and each of the parties hereby consents to the jurisdiction of
such courts (and of the appropriate appellate courts) in any such action or
proceeding and waives any objection to venue laid therein. Process in any such
action or proceeding may be served on any party anywhere in the world, whether
within or without the Commonwealth of Massachusetts.


<PAGE>   56
                                      -50-

          IN WITNESS WHEREOF, the parties hereto have duly executed this
Agreement as of the day and year first above written.

                                       PAREXEL INTERNATIONAL
                                     CORPORATION


                                       By /s/ William T. Sobo, Jr.
                                          --------------------------------------
                                          Title: Vice President and Chief
                                                   Financial Officer


                                       STATE AND FEDERAL ASSOCIATES, INC.


                                       By /s/ Martin J. Miller
                                          --------------------------------------
                                          Title:  President


                                       /s/ Martin J. Miller
                                       -----------------------------------------
                                       Martin J. Miller


                                       /s/ Howard Tag
                                       -----------------------------------------
                                       Howard Tag


                                       /s/ Peter Malamis
                                       -----------------------------------------
                                       Peter Malamis


                                       /s/ Laurie Hughes
                                       -----------------------------------------
                                       Laurie Hughes



                                       S&FA OF ALEXANDRIA PARTNERSHIP


                                       By: /s/ Martin Miller
                                          --------------------------------------
                                           Martin Miller as a General Partner


                                       By: /s/ Robert F. Raven
                                          --------------------------------------
                                           Robert F. Raven as a General Partner

<PAGE>   1
                          
                                                                     EXHIBIT 4.3

                          REGISTRATION RIGHTS AGREEMENT

     AGREEMENT dated as of August 22, 1996 among and PAREXEL International
Corporation, a Massachusetts corporation (the "Company") and the stockholders of
the Company listed on the signature pages hereto (the "Stockholders").

                              W I T N E S S E T H :

     WHEREAS, pursuant to the Purchase Agreement of even date herewith (the
"Purchase Agreement"), among the Company, the Stockholders and others, the
Company is acquiring all of the issued and outstanding shares of capital stock
of State and Federal Associates, Inc., a Virginia corporation ("SF&A").

     WHEREAS, in connection therewith, each Stockholder is acquiring
unregistered shares of Common Stock of the Company (the "Shares"); and

     WHEREAS, the Company and the Stockholders wish to set forth certain rights
and obligations with regard to the registration of the Shares;

     NOW, THEREFORE, the parties hereto agree as follows:

     1. CERTAIN DEFINITIONS. As used in this Agreement, the following terms
shall have the following respective meanings:

          "COMMISSION" shall mean the Securities and Exchange Commission, or any
     other federal agency at the time administering the Securities Act.

          "SHARES" shall mean the shares of Common Stock of the Company issued
     to the Stockholders on even date herewith pursuant to the Purchase
     Agreement and pursuant to the Real Estate Conveyance Documents (as such
     term is defined in the Purchase Agreement), including any shares of Common
     Stock received in accordance with the provisions of the Purchase Agreement
     and the Real Estate Conveyance Documents and transferred from S&FA of
     Alexandria Partnership to its partners, at such time as such transfers are
     permitted.

          "COMMON STOCK" shall mean the Common Stock, $.01 par value, of the
     Company, as constituted as of the date of this Agreement.

          "EXCHANGE ACT" shall mean the Securities Exchange Act of 1934, as
     amended, or any similar federal statute, and the rules and regulations of
     the Commission thereunder, all as the same shall be in effect at the time.

          "REGISTRATION EXPENSES" shall mean the expenses so described in
     Section 9.

<PAGE>   2



          "SECURITIES ACT" shall mean the Securities Act of 1933, as amended, or
     any similar federal statute, and the rules and regulations of the
     Commission thereunder, all as the same shall be in effect at the time.

          "SELLING EXPENSES" shall mean the expenses so described in Section 10.

     2. SECURITIES ACT MATTERS. Each Stockholder acknowledges and agrees that
the Shares have not been registered under the Securities Act or under the
securities laws of any state, in reliance upon certain exemptive provisions of
such statutes. Each Stockholder recognizes and acknowledges that such claims of
exemption are based, in part, upon each Stockholder's representations contained
in this Agreement. Each Stockholder further recognizes and acknowledges that,
because the Shares are unregistered under federal and state laws, they are not
presently eligible for public resale, and may only be resold in the future
pursuant to an effective registration statement under the Securities Act and any
applicable state securities laws, or pursuant to a valid exemption from such
registration requirements. Each Stockholder recognizes and acknowledges that
Rule 144 or any other exemption promulgated under the Securities Act (which
facilitates routine sales of securities in accordance with the terms and
conditions of that Rule, including a holding period requirement) is not now
available for resale of the Shares, and each Stockholder recognizes and
acknowledges that, in the absence of the availability of Rule 144 or any other
exemption under the Securities Act, a sale pursuant to a claim of exemption from
registration under the Securities Act would require compliance with some other
exemption under the Securities Act, none of which may be available for resale of
the Shares. Each Stockholder recognizes and acknowledges that, except as set
forth in this Agreement, the Company is under no obligation to register the
Shares, either pursuant to the Securities Act or the securities laws of any
state.

     3. RESTRICTIVE LEGEND. Each certificate representing Shares shall, except
as otherwise provided in this Section 3 or in Section 4, be stamped or otherwise
imprinted with a legend substantially in the following form:

          "The Securities represented hereby have not been registered under the
          Securities Act of 1933, as amended, and may not be sold, transferred
          or otherwise disposed of except in accordance with the terms thereof
          and unless registered with the Securities and Exchange Commission of
          the United States and the securities regulatory authorities of certain
          states or unless an exemption from such registration is available."

     Such certificates shall not bear such legend if in the opinion of counsel
satisfactory to the Company the securities being sold thereby may be publicly
sold without registration under the Securities Act or if such securities have
been sold pursuant to Rule 144, any other exemption under the Securities Act or
an effective registration statement.

     4. NOTICE OF PROPOSED TRANSFER. Prior to the third anniversary of the
Closing Date (as that term is defined in the Purchase Agreement), each
Stockholder shall give written notice to the Company of his or her intention to
effect any proposed transfer of any Shares. Prior to the S-3 Registration
Statement or the S-1 Registration Statement (as hereinafter defined) becoming


<PAGE>   3


effective, each such notice shall describe the manner of the proposed transfer
and, if requested by the Company, shall be accompanied by an opinion of counsel
satisfactory to the Company to the effect that the proposed transfer may be
effected without registration under the Securities Act, whereupon the
Stockholder shall be entitled to transfer such security in accordance with the
terms of his or her notice. Each certificate for Shares transferred as above
provided shall bear the legend set forth in Section 3, except that such
certificate shall not bear such legend if (i) such transfer is in accordance
with the provisions of Rule 144 (or any other rule permitting public sale
without registration under the Securities Act) or (ii) the opinion of counsel
referred to above is to the further effect that the transferee and any
subsequent transferee (other than an affiliate of the Company) would be entitled
to transfer such securities in a public sale without registration under the
Securities Act. Upon the effectiveness of the S-3 Registration Statement or the
S-1 Registration Statement and upon receipt by the Company of the aforementioned
notice of the Stockholder's proposed transfer, the Company shall cause the
legend described in Section 3 to be removed from such Stockholder's certificate.

     5. REQUIRED REGISTRATION ON FORM S-3. Subject to the provisions set forth
below, the Company agrees to use commercially reasonable efforts to (i) cause a
registration statement on Form S-3 under the Securities Act (the "S-3
Registration Statement") relating to the resale of the Shares to be filed as
soon as practicable following the date on which the Company is eligible to use
such Form S-3, and in any event no later than January 15, 1997; and (ii) cause
the S-3 Registration Statement to become effective no earlier than the
expiration date of the Pooling Restricted Period (as hereinafter defined) and
thereafter remain effective until the earlier of (A) the third (3rd) anniversary
of the Closing Date (as defined in the Purchase Agreement) (the "Distribution
Period") or (B) the sale of all Shares covered thereby. Anything to the contrary
herein notwithstanding, the Company shall not be required to take any action to
cause the S-3 Registration Statement to be declared effective by the Commission
at any time prior to the publication by the Company of financial results
including at least thirty (30) days' post-closing combined operating results of
the Company and S&FA (the "Pooling Restricted Period"), and PROVIDED FURTHER,
HOWEVER, that the Company may suspend sales at any time under the S-3
Registration Statement immediately upon notice to each of the Stockholders at
their last known addresses, for any of the reasons and for the time periods set
forth in Section 7. In the event that at the time the filing of such
registration statement is undertaken or required to be undertaken, the Company
fails to qualify for use of Form S-3 for purposes of registering for resale the
Shares, the Company shall cause a registration statement on Form S-1 to be filed
as soon as practicable thereafter and to use commercially reasonable efforts to
(i) have such registration statement declared effective as soon as practicable
and (ii) maintain the effectiveness of such registration statement until the
earlier of (a) three (3) years from the Closing Date, (b) the date on which all
Shares have been sold by the Stockholders and (c) the date as of which the
Company qualifies for use of Form S-3 and such registration statement shall have
been converted into a registration statement on Form S-3. Any registration
statement filed or required to be filed by the Company pursuant to this Section
5 shall be referred to herein as the "Registration Statement."

     6. REGISTRATION PROCEDURES. If and whenever the Company is required by the
provisions of Section 5 to use commercially reasonable efforts to effect the
registration of any Shares under the Securities Act, the Company will, as
expeditiously as possible:


<PAGE>   4


          (a) prepare and file with the Commission such amendments and
supplements to the Registration Statement, and the prospectuses used in
connection therewith, as may be necessary to comply with the Securities Act;

          (b) furnish to each Stockholder such number of copies of the
Registration Statement and each such amendment and supplement thereto (in each
case including exhibits) and the prospectus included therein (including each
preliminary prospectus) as such persons reasonably may request in order to
facilitate the public sale or other disposition of the Shares covered by the
Registration Statement;

          (c) register or qualify the Shares covered by the Registration
Statement under the securities or "blue sky" laws of the jurisdictions where the
Company is currently registered or qualified, provided, however, that the
Company shall not for any such purpose be required to qualify generally to
transact business as a foreign corporation in any jurisdiction where it is not
so qualified or to consent to general service of process in any such
jurisdiction;

          (d) have the Shares covered by the Registration Statement subject to
quotation on the Nasdaq National Market or listed on any exchange on which
shares of Common Stock are traded; and

          (e) promptly notify each Stockholder (at their last known addresses)
(i) of the effective date of the Registration Statement and the date when any
post-effective amendment to the Registration Statement becomes effective, (ii)
of any stop order or notification from the Commission or any other jurisdiction
as to the suspension of the effectiveness of the Registration Statement, or
(iii) of the end of any suspension under Section 7.

          (f) upon receipt of a notice of proposed transfer by the Stockholder,
notify the Stockholder of the happening of any event as a result of which the
prospectus included in such registration statement, as then in effect, includes
an untrue statement of a material fact or omits to state any material fact
required to be stated therein or necessary to make the statements therein not
misleading in the light of the circumstances then existing, and at the request
of the Stockholder prepare and furnish to the Stockholder a reasonable number of
copies of a supplement to or an amendment of such prospectus as may be necessary
so that, as thereafter delivered to the purchasers of such shares, such
prospectus shall not include an untrue statement of a material fact or omit to
state a material fact required to be stated therein or necessary to make the
statements therein not misleading in light of the circumstances then existing.

     7. Suspension.
        ----------

          (a) The rights of the Stockholders to distribute the Shares pursuant
to this Agreement and the S-3 Registration Statement may be suspended by the
Company on the occurrence of any of the following events:

               (i) the Company has made a determination to conduct a public
          offering;

<PAGE>   5


               (ii) the Company is about to make a normal course disclosure
          containing information of a material nature;
 
               (iii) there then exists material, non-public information relating
          to the Company which, in the good faith determination of its Board of
          Directors, would not be appropriate for disclosure during that time;
          or

               (iv) the Company is engaged in any activity at any time that, in
          the good faith determination of its Board of Directors, would be
          adversely affected by the continued compliance with this Agreement or
          the continued distribution of the Shares by the Stockholders.

          (b) The Company shall use commercially reasonable efforts to minimize
the length of any suspension:

               (i) under Section 7(a)(i), to a period beginning on the day that
          notice of a suspension is given to the Stockholders and ending on the
          earlier of: (A) the date of disclosure of the public offering, or (B)
          the date which is 30 days after the beginning of the suspension,
          provided that during such suspension, the Company will proceed with
          commercially reasonable efforts to file the appropriate documentation
          in respect of, and otherwise complete, such public offering as
          expeditiously as practicable;

               (ii) under Section 7(a)(ii), to a period of not more than three
          (3) business days;

               (iii) under Section 7(a)(iii), if the activity is a prospective
          acquisition by the Company, to a period beginning when the notice of
          suspension is given to the Stockholders and ending on the earlier of:
          (A) the public disclosure of the transaction and the making of all
          required filings under the Securities Act or Exchange Act, or (B) the
          date on which discussions regarding the acquisition are terminated;

               (iv) under Section 7(a)(iii), for any reason other than a
          prospective acquisition by the Company, to a period beginning when the
          notice of suspension is given to the Stockholders and ending on the
          earlier of: (A) the disclosure of the activity, or (B) the reason is
          no longer operative; and

               (v) under Section 7(a)(iv), to a period beginning on the day that
          notice of a suspension is given to the Stockholders and ending on the
          date which is 30 days after the beginning of the suspension, provided,
          however, that the Company shall not avail itself of the suspension
          rights contained in Section 7(a)(iv) more than once in every six (6)
          month period commencing on the date of effectiveness of the
          Registration Statement.

     8. EXPENSES. All expenses incurred by the Company in complying with Section
6, including, without limitation, all registration and filing fees, printing
expenses, fees and disbursements of counsel and independent public accountants
for the Company, fees and expenses incurred in connection with complying with
state securities or "blue sky" laws, fees of


<PAGE>   6


the National Association of Securities Dealers, Inc., transfer taxes, fees of
transfer agents and registrars, and costs of issuance, but excluding any Selling
Expenses (as hereinafter defined), are called "REGISTRATION EXPENSES". All
underwriting discounts (if any) and selling commissions applicable to the sale
of the Shares covered by the S-3 Registration Statement, as well as all
professional service fees incurred by the Stockholders, are called "SELLING
EXPENSES".

     The Company will pay all Registration Expenses in connection with the
preparation and filing of the S-3 Registration Statement. All Selling Expenses
shall be borne by the Stockholders in proportion to the number of Shares sold by
each. The Company shall not be obligated to pay any Registration Expenses in
connection with the preparation and filing of the S-3 Registration Statement if
such registration statement is withdrawn, delayed or abandoned for any reason by
the Stockholders.

     9. Indemnification and Contribution.
        --------------------------------

          (a) In connection with the registration of the Shares under the
Securities Act pursuant to Section 5, the Company will indemnify and hold
harmless each Stockholder and each other person, if any, who controls such
Stockholder within the meaning of the Securities Act, against any losses,
claims, damages or liabilities, joint or several, to which such Stockholder or
controlling person may become subject under the Securities Act, Exchange Act,
state securities laws or otherwise, insofar as such losses, claims, damages or
liabilities (or actions, proceedings or settlements in respect thereof) arise
out of or are based upon (i) any untrue statement or alleged untrue statement of
material fact contained in the registration statement under which such Shares
were registered under the Securities Act pursuant to Section 5, any preliminary
prospectus or final prospectus contained therein, or any amendment or supplement
thereto, (ii) the omission or alleged omission of a material fact required to be
stated therein or necessary to make the statements therein not misleading or
(iii) any violation by the Company or its agents of any rule or regulation
promulgated under the Securities Act, Exchange Act or state securities laws
applicable to the Company or its agents and relating to action or inaction
required of the Company in connection with such registration, and the Company
will reimburse each such Stockholder and each such controlling person for any
legal or other expenses reasonably incurred by them in connection with
investigating or defending any such loss, claim, damage, liability or action,
PROVIDED, HOWEVER, that the Company will not be liable in any such case to the
extent that any such loss, claim, damage or liability arises out of or is based
upon an untrue statement or alleged untrue statement or omission or alleged
omission so made based upon information furnished in writing by any such
Stockholder or any such controlling person for use in such Registration
Statement.

          (b) In connection with the registration of the Shares under the
Securities Act pursuant to Section 5, each Stockholder, severally and not
jointly, will indemnify and hold harmless the Company, each person, if any, who
controls the Company within the meaning of the Securities Act, each officer of
the Company who signs such registration statement and each director of the
Company, against all losses, claims, damages or liabilities, joint or several,
to which the Company or such officer or director may become subject under the
Securities Act or otherwise, insofar as such losses, claims, damages or
liabilities (or actions, proceedings or settlements in respect thereof) arise
out of or are based upon (i) the failure of such Stockholder to


<PAGE>   7


comply with the provisions of Section 12 herein or (ii) any untrue statement or
alleged untrue statement of any material fact contained in the registration
statement, any preliminary prospectus or final prospectus contained therein, or
any amendment or supplement thereto, or arise out of or are based upon the
omission or alleged omission to state therein a material fact required to be
stated therein or necessary to make the statements therein not misleading, and
will reimburse the Company and each such officer and director for any legal or
other expenses reasonably incurred by them in connection with investigating or
defending any such loss, claim, damage, liability or action, PROVIDED, HOWEVER,
that such Stockholder will be liable hereunder in any such case if and only to
the extent that any such loss, claim, damage or liability arises out of or is
based upon an untrue statement or alleged untrue statement or omission or
alleged omission made in reliance upon and based upon information pertaining to
such Stockholder, furnished in writing by or for such Stockholder for use in
such registration statement, PROVIDED, FURTHER, HOWEVER, that the liability of
each Stockholder hereunder shall be limited to the proceeds received by such
Stockholder from the sale of the Shares covered by such registration statement;
and PROVIDED, FURTHER, HOWEVER, that the obligations of the Stockholder
hereunder shall not apply to amounts paid in settlement of any such loss, claim,
damage, liability, or action if such settlement is effected without the consent
of the Stockholder.

          (c) Promptly after receipt by an indemnified party hereunder of notice
of the commencement of any action, such indemnified party shall, if a claim in
respect thereof is to be made against the indemnifying party hereunder, notify
the indemnifying party in writing thereof, but the omission so to notify the
indemnifying party shall not relieve it from any liability which it may have to
such indemnified party other than under this Section 9 and shall only relieve it
from any liability which it may have to such indemnified party under this
Section 9 if and to the extent the indemnifying party is prejudiced by such
omission. In case any such action shall be brought against any indemnified party
and it shall notify the indemnifying party of the commencement thereof, the
indemnifying party shall be entitled to participate in and, to the extent it
shall wish, to assume and undertake the defense thereof with counsel
satisfactory to such indemnified party, and, after notice from the indemnifying
party to such indemnified party of its election so to assume and undertake the
defense thereof and the approval by the indemnified party of the counsel chosen
by the indemnifying party, the indemnifying party shall not be liable to such
indemnified party under this Section 9 for any legal expenses subsequently
incurred by such indemnified party in connection with the defense thereof other
than reasonable costs of investigation and of liaison with counsel so selected,
PROVIDED, HOWEVER, that, if the defendants in any such action include both the
indemnified party and the indemnifying party and if the interests of the
indemnified party reasonably may be deemed to conflict with the interests of the
indemnifying party, the indemnified party shall have the right to select a
separate counsel and to assume such legal defenses and otherwise to participate
in the defense of such action, with the expenses and fees of such separate
counsel and other expenses related to such participation to be reimbursed by the
indemnifying party as incurred.

          (d) In order to provide for just and equitable contribution to joint
liability in any case in which either (i) any Stockholder exercising rights
under this Agreement makes a claim for indemnification pursuant to this Section
9 but it is judicially determined (by the entry of a final judgment or decree by
a court of competent jurisdiction and the expiration of time to appeal or the
denial of the last right of appeal) that such indemnification may not be
enforced in such 


<PAGE>   8


case notwithstanding the fact that this Section 9 provides for indemnification
in such case, or (ii) contribution under the Securities Act may be required on
the part of any such Stockholder in circumstances for which indemnification is
provided under this Section 9; then, and in each such case, the Company and such
Stockholder will contribute to the aggregate losses, claims, damages or
liabilities to which they may be subject (after contribution from others) in
proportion to the relative fault of the Company, on the one hand, and each
Stockholder, severally, on the other hand; PROVIDED, HOWEVER, that, in any such
case, no person or entity guilty of fraudulent misrepresentation (within the
meaning of Section 11(f) of the Securities Act) will be entitled to contribution
from any person or entity who was not guilty of such fraudulent
misrepresentation and no such indemnifying party will be required to contribute
any amount in excess of the public offering price of all shares offered by it
pursuant to such registration statement. The relative fault of the indemnifying
party and of the indemnified party shall be determined by reference to, among
other things, whether the untrue or alleged untrue statement of a material fact
or the omission to state a material fact relates to information supplied by the
indemnifying party or by the indemnified party and the parties' relative intent,
knowledge, access to information, and opportunity to correct or prevent such
statement or omission.

          (e) The indemnities provided in this Section 9 shall survive the
transfer of any Shares by such Stockholder.

     10. REPORTS UNDER SECURITIES EXCHANGE ACT OF 1934. With a view to making
available to the Stockholders the benefits of Rule 144 promulgated under the
Securities Act and any other rule or regulation thereunder that may at any time
permit a Stockholder to sell securities of the Company to the public without
registration, the Company agrees to:

          (a) make and keep public information available, as those terms are
understood and defined in Rule 144;

          (b) maintain registration of its Common Stock under Section 12 of the
Exchange Act;

          (c) file in a timely manner all reports and other documents required
of the Company under the Securities Act and the Exchange Act; and

          (d) furnish to any Stockholder, so long as the Stockholder owns any
Shares, forthwith upon request: (i) a written statement by the Company that it
has complied with the reporting requirements of Rule 144, (ii) a copy of the
most recent annual or quarterly report of the Company and such other reports and
documents so filed by the Company; and (iii) such other information as may be
reasonably requested in availing any Stockholder of any rule or regulation under
the Securities Act which permits the selling of any such securities without
registration or pursuant to such form.

     11. CHANGES IN COMMON STOCK. If, and as often as, there is any change in
the Common Stock by way of a stock split, stock dividend, combination or
reclassification, or through a merger, consolidation, reorganization or
recapitalization, or by any other means, appropriate


<PAGE>   9

adjustment shall be made inthe provisions hereof so that the rights and
privileges granted hereby shall continue with respect to the Shares as so
changed.

     12. STOCKHOLDERS' CONDUCT. With respect to any sale of Shares covered by
the Registration Statement, each Stockholder understands and agrees as follows:

          (a) Each Stockholder will carefully review the information concerning
him or her contained in the Registration Statement and will promptly notify the
Company if such information is not complete and accurate in all respects,
including having properly disclosed any position, office or other material
relationship within the past three years with the Company or its affiliates;

          (b) Each Stockholder agrees to sell Shares only in the manner set
forth in (i) the Registration Statement (or in compliance with Section 4
hereof), (ii) the Affiliate Agreement (as defined in the Purchase Agreement) and
(iii) Section 13;

          (c) Each Stockholder agrees to comply with the anti-manipulation rules
under the Exchange Act in connection with purchases and sales of securities of
the Company during the time the Registration Statement remains effective;

          (d) Each Stockholder agrees to only sell Shares in a jurisdiction
after counsel for the Company has advised that such sale is permissible under
the applicable state securities or "Blue Sky" laws;

          (e) Each Stockholder agrees to comply with the prospectus delivery
requirements of the Exchange Act;

          (f) Prior to the third anniversary of the Closing Date, each
Stockholder agrees to promptly notify the Company of any and all planned sales
and completed sales of Shares; and

          (g) Each Stockholder agrees to suspend sales during the periods when
sales are to be suspended pursuant to Section 7.

          (h) In connection with the registration of the Shares, each
Stockholder will furnish to the Company in writing such information requested by
the Company with respect to themselves and the proposed distribution by them as
shall be necessary in order to assure compliance with federal and applicable
state securities laws.

          (i) Each Stockholder hereby agrees that he or she will not sell,
exchange, transfer, pledge, dispose or otherwise reduce his or her risk relative
to any Shares owned by him or her during the period which begins on the date
hereof and ends at such time as the Company publicly announces financial results
covering at least thirty days of combined operations of the Company and S&FA.
The Company, at its discretion, may cause stop transfer orders to be placed with
its transfer agent with respect to the certificates representing the Shares,
provided that such stop transfer orders are consistent with the other provisions
of the Agreement.


<PAGE>   10


     13. Selling Procedures.
         ------------------

          (a) Each Stockholder will notify the Company of his or her intention
to sell Shares under the S-3 Registration Statement not less than five (5)
business days prior to the expected date of such sale by faxing the "Takedown
Request" attached hereto as EXHIBIT A to:

                         Testa, Hurwitz & Thibeault, LLP
                                 125 High Street
                                High Street Tower
                           Boston, Massachusetts 02110
                             Attn: Heather M. Stone
                              Phone: (617) 248-7238
                            Facsimile: (617) 248-7100

During this period, the Company will review the prospectus to determine if a
suspension pursuant to Section 7 is necessary or appropriate. If the Company
does not notify the Stockholder of a suspension pursuant to Section 7, the
Stockholder may conclude the proposed sale, on the proposed date of sale,
strictly in accordance with the Takedown Request.

              (b) Prior to the third anniversary of the Closing Date, each
Stockholder will notify the Company of each sale under the Registration
Statement in accordance with the Takedown Request within 24 hours of the sale by
faxing the "Notification of Sale" attached hereto as EXHIBIT B to:

                         Testa, Hurwitz & Thibeault, LLP
                                 125 High Street
                                High Street Tower
                           Boston, Massachusetts 02110
                             Attn: Heather M. Stone
                              Phone: (617) 248-7238
                            Facsimile: (617) 248-7100

Based on the information set forth on the Notification of Sale, the Company will
prepare or cause to be prepared the appropriate notifications to its Transfer
Agent to remove the legend described in Section 3 from the Shares so sold.

     14. REPRESENTATIONS AND COVENANTS. Each Stockholder hereby represents and
warrants to the Company as follows:

          (a) EACH STOCKHOLDER UNDERSTANDS THAT HIS OR HER INVESTMENT IN THE
SHARES INVOLVES RISK.

          (b) EACH STOCKHOLDER HAS CONSULTED HIS OR HER OWN ATTORNEY, ACCOUNTANT
OR INVESTMENT ADVISOR WITH RESPECT TO THE INVESTMENT CONTEMPLATED HEREBY AND ITS
SUITABILITY FOR SUCH STOCKHOLDER. ANY SPECIFIC ACKNOWLEDGMENT SET FORTH BELOW
WITH 

<PAGE>   11


RESPECT TO ANY STATEMENT OR INFORMATION FURNISHED TO THE STOCKHOLDERS SHALL
NOT BE DEEMED TO LIMIT THE GENERALITY OF THIS REPRESENTATION AND WARRANTY.

          (c) The Company has made available to each Stockholder, during the
course of this transaction and prior to the acquisition of the Shares, the
opportunity to ask questions of and receive complete and correct answers from
representatives of the Company concerning the terms and conditions of the Shares
and to obtain any additional information relating to the financial condition and
business of the Company.

          (d) Each Stockholder understands that he or she must bear the economic
risk of this investment until such time as the Shares are registered; that the
Shares are not currently registered under the Securities Act, and, therefore,
cannot be resold unless they are subsequently registered under the Securities
Act or unless an exemption from such registration is available; that such
Stockholder is purchasing the Shares with no present view toward resale or other
distribution thereof; and that each Stockholder agrees not to resell or
otherwise dispose of all or any part of the Shares, except as permitted by law,
including, without limitation, any and all applicable provisions of the Purchase
Agreement and this Agreement and any regulations under the Securities Act and
applicable state securities laws.

          (e) Each Stockholder has adequate means of providing for his or her
current needs and personal contingencies and has no need for liquidity in
connection with this investment in the Shares.

          (f) Each Stockholder has reviewed the representations and warranties
of the Company set forth in the Purchase Agreement and has consulted with his or
her personal legal and financial advisors in evaluating the merits and risks of
the investment in the Shares.

          (h) Each Stockholder received an offer concerning the Shares and first
learned of this investment in the state or other jurisdiction listed in such
Stockholder's residence address on the signature page hereto, and intend that
the state securities laws of that state or other jurisdiction alone govern this
transaction.

          (i) Each Stockholder acknowledges and warrants that, prior to the
execution of this Agreement, he or she has had the opportunity to ask questions
and receive answers from the Company and S&FA concerning the terms and
conditions of the transactions contemplated by the Purchase Agreement and the
issuance of the Shares, and concerning any of the documents identified above,
and to obtain such additional further information from the Company and S&FA as
he or she has deemed necessary to verify the accuracy of the information
contained in the documents identified above or any other information furnished
to the Stockholders.

          (j) Each Stockholder has been advised that, as of the date hereof, he
or she may be deemed to be an "affiliate" of S&FA, as the term "affiliate" is
used in and for purposes of Accounting Series Releases 130 and 135, as amended,
of the Commission.


<PAGE>   12


          (k) Each Stockholder understands that the representations, warranties
and covenants set forth herein will be relied upon by S&FA, other stockholders
of S&FA, the Company, the stockholders of the Company and their respective
counsel and accounting firms.

          (l) Each Stockholder hereby represents and warrants that he or she has
not sold, exchanged, transferred, pledged, disposed or otherwise reduced his or
her risk relative to any shares of S&FA common stock owned by him or her during
the 30 day period preceding the date hereof.

     15. Miscellaneous.
         -------------

          (a) All covenants and agreements contained in this Agreement by or on
behalf of any of the parties hereto shall bind and inure to the benefit of the
respective successors and assigns of the parties hereto (including without
limitation transferees of any Shares, provided, that such transferee executes a
counterpart signature page to this Agreement), whether so expressed or not.

          (b) All notices and other communications which by any provision of
this Agreement are required or permitted to be given shall be given in writing
and shall be (a) mailed by first-class or express mail, postage prepaid, (b)
sent by telex, telegram, telecopy or other form of rapid transmission, confirmed
by mailing (by first class or express mail, postage prepaid) written
confirmation at substantially the same time as such rapid transmission, or (c)
personally delivered to the receiving party (which if other than an individual
shall be an officer or other responsible party of the receiving party). All such
notices and communications shall be mailed, sent or delivered as follows:

               if to the Company, at 195 West Street, Waltham, Massachusetts
          02154, Attention: William T. Sobo, Jr., Chief Financial Officer, with
          a copy to Testa, Hurwitz & Thibeault, LLP, 125 High Street, High
          Street Tower, Boston, Massachusetts 02110, Attn: William J. Schnoor,
          Jr.;

               if to any other party hereto, at the address of such party set
          forth on the signature page hereto, with a copy to Baker & McKenzie,
          815 Connecticut Avenue, N.W., Suite 900, Washington, D.C. 20006, Attn:
          Thomas J. Egan, Jr., Esq.;

               if to any subsequent Stockholder of Shares, to it at such address
          as may have been furnished to the Company in writing by such
          Stockholder;

or, in any case, at such other address or addresses as shall have been furnished
in writing to the Company (in the case of a Stockholder) or to the Stockholders
(in the case of the Company) in accordance with the provisions of this
paragraph. Notices shall be deemed duly delivered three business days after
being sent by first class mail, postage prepaid, or one business day after being
sent via a reputable nationwide express mail service. Notices delivered via any
other means shall be deemed duly delivered upon actual receipt by the individual
for whom such notice is intended. 


<PAGE>   13


Any notice delivered to a party hereunder shall be sent simultaneously, by the
same means, to such party's counsel as set forth above.

          (c) This Agreement shall be governed by and construed in accordance
with the laws of the Commonwealth of Massachusetts.

          (d) This Agreement may be amended or modified, and provisions hereof
may be waived, with the written consent of the Company and the holders of at
least a majority of the outstanding Shares.

          (e) This Agreement may be executed in two or more counterparts, each
of which shall be deemed an original, but all of which together shall constitute
one and the same instrument.

          (f) If any provision of this Agreement shall be held to be illegal,
invalid or unenforceable, such illegality, invalidity or unenforceability shall
attach only to such provision and shall not in any manner affect or render
illegal, invalid or unenforceable any other provision of this Agreement, and
this Agreement shall be carried out as if any such illegal, invalid or
unenforceable provision were not contained herein.


<PAGE>   14


     IN WITNESS WHEREOF, the parties hereto have duly executed this Agreement as
of the day and year first above written.

                               PAREXEL INTERNATIONAL CORPORATION

                               By:  /s/ William T. Sobo
                                    ----------------------------

                               Name:  William T. Sobo
                                      --------------------------

                               Title: V.P. and CFO
                                      --------------------------

                               /s/ Martin J. Miller
                               ---------------------------------
                               Martin J. Miller

                               /s/ Robert F. Raven
                               ---------------------------------
                               Robert F. Raven

                               /s/ Howard Tag
                               ---------------------------------
                               Howard Tag

                               /s/ Peter Malamis
                               ---------------------------------
                                Peter Malamis

                               /s/ Laurie Hughes
                               ---------------------------------
                                Laurie Hughes

                               S&FA OF ALEXANDRIA PARTNERSHIP

                               By:/s/ Martin Miller
                                  ------------------------------
                                  Martin Miller as General Partner

                               By:/s/ Robert F. Raven
                                  ------------------------------
                                  Robert F. Raven as General Partner

                [You must complete pages 15-16 of this Agreement]


<PAGE>   15


Principal Residence Address:
- ----------------------------
Note: Non-principal residence addresses and post office boxes cannot be 
      accepted.



- -----------------------------------------------
(Number and Street)



- -----------------------------------------------
(City, State)       (Zip Code)



- -----------------------------------------------
(Residence Telephone)


Mailing Address (if different from above):
- -----------------------------------------------


- -----------------------------------------------
(Number and Street)


- -----------------------------------------------
(City, State)       (Zip Code)


Citizenship:  USA
- ------------------------------------------------


Social Security or Taxpayer I.D. No.:
                                     ------------


<PAGE>   16

<PAGE>   17

<PAGE>   18

<PAGE>   19

<PAGE>   20

<PAGE>   21


     If the Stockholder is a natural person and is an accredited investor
described by category 12 or 13 (or both) set forth on the attached EXHIBIT C,
please check this box.   [ ]

     If the Stockholder has not checked the box above, please check this box if
at least one of the categories set forth on the attached EXHIBIT C describes
you.   [ ]


<PAGE>   22


                                                                       Exhibit A

                                                to Registration Rights Agreement
                                                --------------------------------

                                TAKEDOWN REQUEST

     The undersigned Stockholder intends to offer and sell to the public Shares
of PAREXEL International Corporation registered under a certain Registration
Statement on Form S-3, File No. 333-_______.


<TABLE>
- ----------------------------------------------------------------------------------------------------------------
<CAPTION>
                                        Name, Address, Telephone
                                     Number and Facsimile Number of                     Number of       Proposed
  Name, Address, Telephone Number        Agent, Broker-Dealer or        Number of      Shares to be       Date
and Facsimile Number of Stockholder            Underwriter             Shares Owned        Sold         of Sale*
- ----------------------------------------------------------------------------------------------------------------
<S>                                     <C>

- ----------------------------------------------------------------------------------------------------------------


- ----------------------------------------------------------------------------------------------------------------

*    MUST BE AT LEAST FIVE (5) BUSINESS DAYS AFTER THE DATE HEREOF.
</TABLE>

Other Information:

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

     The undersigned Stockholder agrees to provide all information and materials
and to take all actions as may be required in order for PAREXEL International
Corporation to comply with all applicable securities laws.

                                                    ------------------------
                                                    Signature of Stockholder

                                                    ------------------------
                                                    Print Name

                                                    ------------------------
                                                    Date
 
           ALL TAKEDOWN REQUESTS SHOULD BE FORWARDED BY FACSIMILE TO:
                         TESTA, HURWITZ & THIBEAULT, LLP
                                 125 HIGH STREET
                                HIGH STREET TOWER
                           BOSTON, MASSACHUSETTS 02110
                             ATTN: HEATHER M. STONE
                              PHONE: (617) 248-7238
                            FACSIMILE: (617) 248-7100
            AT LEAST FIVE (5) BUSINESS DAYS PRIOR TO A PROPOSED SALE


<PAGE>   23


                                                                       Exhibit B

                                                to Registration Rights Agreement
                                                --------------------------------

                              NOTIFICATION OF SALE

     The undersigned Stockholder sold to the public Shares of PAREXEL
International Corporation registered under a certain Registration Statement on
Form S-3, File No. 333-_______, as follows.


<TABLE>
- ----------------------------------------------------------------------------------------------------------------
<CAPTION>
                                        Name, Address, Telephone
                                     Number and Facsimile Number of                     Number of       Proposed
  Name, Address, Telephone Number        Agent, Broker-Dealer or        Number of      Shares to be       Date
and Facsimile Number of Stockholder            Underwriter             Shares Owned        Sold         of Sale*
- ----------------------------------------------------------------------------------------------------------------
<S>                                     <C>

- ----------------------------------------------------------------------------------------------------------------


- ----------------------------------------------------------------------------------------------------------------
</TABLE>

Other Information:

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------



                                                    ------------------------
                                                    Signature of Stockholder

                                                    ------------------------
                                                    Print Name

                                                    ------------------------
                                                    Date
 
           ALL TAKEDOWN REQUESTS SHOULD BE FORWARDED BY FACSIMILE TO:
                         TESTA, HURWITZ & THIBEAULT, LLP
                                 125 HIGH STREET
                                HIGH STREET TOWER
                           BOSTON, MASSACHUSETTS 02110
                             ATTN: HEATHER M. STONE
                              PHONE: (617) 248-7238
                            FACSIMILE: (617) 248-7100
                        WITHIN 24 HOURS FOLLOWING A SALE


<PAGE>   24


                                                                       Exhibit C

                                                to Registration Rights Agreement
                                                --------------------------------

     1. A bank (as defined in Section 3(a)(2) of the Securities Act) or a
savings and loan association or other institution (as defined in Section
3(a)(5)(A) of the Securities Act), whether acting in regard to this investment
in its individual or a fiduciary capacity.

     2. A broker or dealer registered pursuant to Section 15 of the Securities
Exchange Act of 1934.

     3. An insurance company (as defined in Section 2(13) of the Securities
Act).

     4. An investment company registered under the Investment Company Act.

     5. A business development company (as defined in Section 2(a)(48) of the
Investment Company Act).

     6. A Small Business Investment Company licensed by the U.S. Small Business
Administration under Section 301(c) or (d) of the Small Business Investment Act
of 1958.

     7. A plan established and maintained by a state, its political
subdivisions, or any agency or instrumentality of a state or its political
subdivisions, for the benefit of its employees, if the plan has total assets in
excess of $5,000,000.

     8. An employee benefit plan within the meaning of Title I of the Employee
Retirement Income Security Act of 1974 (an "ERISA Plan") whose decision to
purchase the Interest was made by a plan fiduciary (as defined in Section 3(21)
of ERISA), which is either a bank, savings and loan association, insurance
company or registered investment adviser.

     9. An ERISA Plan with total assets in excess of $5,000,000 or, if a
self-directed ERISA Plan, with investment decisions made solely by persons that
are "accredited investors."

     10. A private business development company (as defined in Section
202(a)(22) of the Investment Advisers Act of 1940).

     11. An organization described in Section 501(c)(3) of the Internal Revenue
Code of 1986, as amended, corporation, Massachusetts or similar business trust
or partnership, not formed for the specific purpose of acquiring the Interest,
with total assets in excess of $5,000,000.

     12. A natural person whose net worth (either individually or jointly with
such person's spouse) at the time of the Closing exceeds $1,000,000.

     13. A natural person who had an individual income in excess of $200,000 or
joint income with such person's spouse in excess of $300,000 in each of the last
two calendar years and who reasonably expects to reach the same income level in
the current calendar year.

<PAGE>   25


     14. A trust, with total assets in excess of $5,000,000, not formed for the
specific purpose of acquiring the Interest, whose purchase of the Interest is
directed by a sophisticated person as described in Rule 506(b)(2)(ii) under the
Securities Act.

     15. An entity in which all of the equity owners fit into at least one of
the categories listed under paragraphs 1-14 above.

<PAGE>   1
                                                                     EXHIBIT 5.1


                                                                January 14, 1997


PAREXEL International Corporation
195 West Street
Waltham, MA 02154

     RE: Registration Statement on Form S-3
         Relating to 330,652 shares of Common Stock
         ------------------------------------------

Dear Sir or Madam:

     We are counsel to PAREXEL International Corporation, a Massachusetts
corporation (the "Company"), and have represented the Company in connection with
the preparation and filing of the Company's Registration Statement on Form S-3
(the "Registration Statement"), covering the resale to the public of up to
330,652 shares of the Company's Common Stock, $.01 par value per share, by
certain stockholders of the Company (the "Shares").

     We have reviewed the corporate proceedings taken by the Board of Directors
of the Company with respect to the authorization and issuance of the Shares. We
have also examined and relied upon originals or copies, certified or otherwise
authenticated to our satisfaction, of all corporate records, documents,
agreements or other instruments of the Company and have made all investigations
of law and have discussed with the Company's officers all questions of fact that
we have deemed necessary or appropriate.

     Based upon and subject to the foregoing, we are of the opinion that the
Shares are legally issued, fully paid and non-assessable.

     We hereby consent to the filing of this opinion as Exhibit 5.1 to the
Registration Statement and to the reference to our firm in the Prospectus
contained in the Registration Statement under the caption "Legal Matters."

                                          Very truly yours,


                                          /s/ Testa, Hurwitz & Thibeault, LLP
                                          -----------------------------------
                                          Testa, Hurwitz & Thibeault, LLP

<PAGE>   1

                                                                    Exhibit 23.1

                       CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the incorporation by reference in the Prospectus
constituting part of this Registration Statement on Form S-3 of our report
dated August 22, 1996, which appears on page 33 of the 1996 Annual Report to
Shareholders of PAREXEL International Corporation, which is incorporated by
reference in PAREXEL's Annual Report on Form 10-K for the year ended June 30,
1996. We also consent to the application of such report to the Financial
Statement Schedule for the three years ended June 30, 1996 listed under Item
14(a) of PAREXEL International Corporation's Annual Report on Form 10-K for the
year ended June 30, 1996 when such schedule is read in conjunction with the
financial statements referred to our report. The audit referred to in such
report also included this Financial Statement Schedule. We also consent to 
the reference to us under the heading "Experts" in such Prospectus.


PRICE WATERHOUSE LLP

Boston, Massachusetts
January 14, 1997


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