OPPENHEIMER TAX EXEMPT BOND FUND
N-30D, 1994-12-05
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<PAGE>   1
OPPENHEIMER INSURED TAX-EXEMPT BOND FUND
ANNUAL REPORT SEPTEMBER 30, 1994



(OPPENHEIMERFUNDS(R) LOGO)



<PAGE>   2
FUND FACTS

IN THIS REPORT:

ANSWERS TO TIMELY QUESTIONS 
YOU SHOULD ASK YOUR FUND'S MANAGERS.

* HOW DID THE FEDERAL RESERVE'S MOVES TO RAISE INTEREST RATES AFFECT THE FUND'S
INVESTMENT STRATEGY AND RETURNS FOR THE PAST YEAR?

* WHAT'S THE OUTLOOK FOR THE MUNICIPAL MARKET OVERALL AND THE INSURED SECTOR IN
PARTICULAR?

* WHAT KINDS OF BONDS OFFER THE BEST BUYING OPPORTUNITIES TODAY?

                        FACTS EVERY SHAREHOLDER SHOULD KNOW ABOUT
                        OPPENHEIMER INSURED TAX-EXEMPT BOND FUND

- -------------------------------------------------------------------------------
1                       The Fund seeks current income exempt from federal
                        income taxes from a select portfolio of municipal bonds
                        and notes, whose payments of interest and principal are
                        insured.(1)

- -------------------------------------------------------------------------------
2                       Total return at net asset value for the 12 months ended
                        9/30/94 was -5.46% for Class A shares and -6.20% for
                        Class B shares.(2)

- -------------------------------------------------------------------------------
3                       For many investors, earning tax-free income is
                        important under current federal tax rates. The table
                        below shows the taxable equivalent yield needed to
                        match the Fund's standardized yield for the top tax
                        brackets.*



<TABLE>
<CAPTION>
                                              HERE IS THE TAXABLE EQUIVALENT OF THE FUND'S
                                              YIELDS FOR AN INVESTOR IN THE:                  
                                              ------------------------------------------------------

                                  FUND YIELD      31% FEDERAL     36% FEDERAL       39.6% FEDERAL
                                  ON 9/30/94      TAX BRACKET     TAX BRACKET       TAX BRACKET
                        ----------------------------------------------------------------------------
                        <S>       <C>              <C>             <C>               <C>

                        CLASS A   5.00%(3)         7.25%           7.81%             8.28%
                                                                                         
                        CLASS B   4.47%(3)         6.48%           6.98%             7.40%
</TABLE>

                        *This table assumes that an investor's highest tax
                        bracket applies to the change in taxable income
                        resulting from a switch between taxable and non-taxable
                        investments. A portion of the Fund's distributions may
                        be subject to federal and/or state income taxes. For
                        investors subject to alternative minimum tax, a portion
                        of the Fund's distributions may increase that tax.

- -------------------------------------------------------------------------------
4                       Average annual total returns for Class A shares for the
                        1- and 5-year periods ended September 30, 1994 and
                        since inception of the Fund on November 11, 1986 were
                        -9.95%, 6.35% and 6.06%, respectively.  For Class B
                        shares, average annual total returns for the 1-year
                        period ended September 30, 1994 and since inception on
                        May 3, 1993 were -10.89% and -3.23%, respectively.(4)

- -------------------------------------------------------------------------------
5                       "Insured bonds recently have been providing
                        exceptionally attractive yields compared to uninsured
                        issues of the same quality. This combination of
                        attractive, tax-free income and the guaranteed timely
                        payment of principal and interest on nearly every bond
                        in the portfolio should continue to make the Fund
                        attractive to conservative, tax-conscious
                        investors."
                                    
                                    
                                    Portfolio Managers Bob Patterson and Caryn
                                    Halbrecht, September 30, 1994


(1) The value of the Fund's shares is not insured.

(2) Based on the changes in net asset value per share from 9/30/93 to 9/30/94,
without deducting any sales charges. Such performance would have been lower if
sales charges were taken into account.

(3) Standardized yield is net investment income calculated on a
yield-to-maturity basis for the 30-day period ended 9/30/94, divided by the
maximum offering price at the end of the period, compounded semi-annually and
then annualized. Falling net asset values will tend to artificially raise
yields.

(4) Average annual total returns are based on a hypothetical investment held
until 9/30/94, after deducting the current maximum initial sales charge of
4.75% for Class A shares and the contingent deferred sales charge of 5%
(1-year) and 4% (since inception) for Class B shares. The Fund's maximum sales
charge rate for Class A shares was lower during a portion of some of the
periods shown, and actual investment results will be different as a result of
the change.

The Fund's portfolio is subject to change. All figures assume reinvestment of
dividends and capital gains distributions.

Past performance is not indicative of future results. Investment and principal
value on an investment in the Fund will fluctuate so that an investor's shares,
when redeemed, may be worth more or less than the original cost.

2  Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   3
REPORT TO SHAREHOLDERS

Oppenheimer Insured Tax-Exempt Bond Fund met its objectives for the year ended
September 30, 1994, providing a level of tax-free income that would be
difficult to match on taxable investments of comparable quality, and performing
well on a long-term basis in some of the most challenging bond markets seen in
years.

           Standardized yields for Class A and Class B shares for the 30 days
ended September 30, 1994 were 5.00% and 4.47%, respectively.(5)

           The Fund was, of course, affected by aggressive increases in
short-term interest rates by the Federal Reserve Board, which caused the prices
of most bonds to decline.

           At this writing, the market's fundamentals are strong and getting
stronger. The Fed's actions have helped keep possible inflation in check, while
the market's supply and demand characteristics are positive. The supply of
insured municipal bonds is running below last year's pace, while demand for
tax-free securities is rising, driven by both rising taxes and the high volume
of bond calls nationwide expected over the next 12 to 18 months. This
combination of low inflation, shrinking bond supply, and mounting demand should
provide support for bond prices.

           Just as important, the finances of issuing states continue to
improve, providing your managers with opportunities to add several attractive
issues to the portfolio.

           Throughout the year, your managers maintained their focus on
high-quality, essential service issues, diversified by market sector and by
state, and backed by stable, predictable revenue streams, as well as on bonds
offering significant call protection.

           Looking ahead, your managers believe that the insured municipal
market offers substantial value to investors. The fundamentals for long-term
performance are in place, and your managers will look for opportunities to buy
value at attractive prices--the best way to produce long-term investment gains.

           We appreciate your confidence in Oppenheimer Insured Tax-Exempt Bond
Fund, and we look forward to continuing to help you meet your investment goals
in the future.


<TABLE>
<S>                                                         <C>
/s/ JAMES C. SWAIN                              /s/ JON S. FOSSEL
- ------------------                              -----------------
James C. Swain                                  Jon S. Fossel
Chairman                                        President
Oppenheimer Tax-Exempt Bond Fund for            Oppenheimer Tax-Exempt Bond Fund for
Oppenheimer Insured Tax-Exempt Bond Fund        Oppenheimer Insured Tax-Exempt Bond Fund
</TABLE>

October 21, 1994

(5) See footnote 3, page 2.

(3) Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   4
STATEMENT OF INVESTMENTS   September 30, 1994

<TABLE>
<CAPTION>
                                                                            RATINGS: MOODY'S/
                                                                            S&P'S/FITCH'S        FACE              MARKET VALUE
                                                                            (UNAUDITED)          AMOUNT            SEE NOTE 1
===============================================================================================================================
MUNICIPAL BONDS AND NOTES--97.9%
<S>                      <C>                                                <C>                  <C>                 <C>
- -------------------------------------------------------------------------------------------------------------------------------
ALABAMA--1.4%            Pelham, Alabama General Obligation Warrants,
                         AMBAC Insured, 7.10%, 8/1/15                        Aaa/AAA/AAA         $1,000,000          $1,112,331
- -------------------------------------------------------------------------------------------------------------------------------
ALASKA--4.9%             Alaska Energy Authority Power Revenue Bonds,
                         Bradley Lake Hydroelectric Project, Series 2,
                         MBIA Insured, 7.25%, 7/1/21                         Aaa/AAA                500,000             532,496
                         ------------------------------------------------------------------------------------------------------
                         North Slope Boro, Alaska General Obligation
                         Revenue Refunding Bonds, Series G, FSA Insured,
                         8.35%, 6/30/98                                      Aaa/AAA/A-           3,000,000           3,337,251
                                                                                                                    ------------
                                                                                                                      3,869,747

- -------------------------------------------------------------------------------------------------------------------------------
CALIFORNIA--5.5%         California Public Capital Improvements
                         Financing Authority Revenue Bonds, Pooled
                         Project, Series B, BIG Insured, 8.10%, 3/1/18       Aaa/AAA                240,000             261,624
                         ------------------------------------------------------------------------------------------------------
                         Loma Linda, California Revenue Bonds,
                         City Hall & Public Improvement Projects,
                         AMBAC Insured, 5.40%, 1/1/16                        Aaa/AAA/AAA          2,000,000           1,746,162
                         ------------------------------------------------------------------------------------------------------
                         Los Angeles County, California Metropolitan
                         Transportation Authority Sales Tax Revenue
                         Refunding Bonds, Series A, MBIA Insured,
                         5.625%, 7/1/18                                      Aaa/AAA/A+           1,500,000           1,341,198
                         ------------------------------------------------------------------------------------------------------
                         Sacramento, California Municipal Electric
                         Utility District Revenue Refunding Bonds,
                         Series G, MBIA Insured, 6.50%, 9/1/13               Aaa/AAA/A-           1,000,000           1,022,974
                                                                                                                    -----------
                                                                                                                      4,371,958

- -------------------------------------------------------------------------------------------------------------------------------
COLORADO--2.1%           Colorado Health Facilities Authority
                         Revenue Bonds:
                         PSL Health System Project,
                         Series A, FSA Insured, 7.25%, 2/15/16               Aaa/AAA                500,000             539,242
                         Rose Medical Center, Prerefunded,
                         MBIA Insured, 7%, 8/15/21                           Aaa/AAA                500,000             553,548
                         ------------------------------------------------------------------------------------------------------
                         Poudre Valley, Colorado Hospital District
                         Revenue Bonds, Prerefunded, AMBAC Insured,
                         6.625%, 12/1/11                                     Aaa/AAA/AAA            500,000             540,468
                                                                                                                    -----------
                                                                                                                      1,633,258

- -------------------------------------------------------------------------------------------------------------------------------
DELAWARE--2.8%           Delaware Transportation System Authority
                         Revenue Refunding Bonds, 7.75%, 7/1/04              Aaa/AAA              2,000,000           2,210,050
- -------------------------------------------------------------------------------------------------------------------------------
FLORIDA--1.2%            Orange County, Florida Tourist Development
                         Tax Revenue Refunding Bonds, Series A,
                         MBIA Insured, 5.90%, 10/1/10                        Aaa/AAA/A            1,000,000             974,767
- -------------------------------------------------------------------------------------------------------------------------------
GEORGIA--1.2%            Fulton De Kalb, Georgia Hospital Authority
                         Revenue Certificates, Prerefunded, Series A,
                         AMBAC Insured, 7.25%, 1/1/20                        Aaa/AAA/AAA            900,000             994,873
</TABLE>

4  Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   5
<TABLE>
<CAPTION>
                                                                            RATINGS: MOODY'S/
                                                                            S&P'S/FITCH'S        FACE              MARKET VALUE
                                                                            (UNAUDITED)          AMOUNT            SEE NOTE 1
- -------------------------------------------------------------------------------------------------------------------------------
<S>                      <C>                                                 <C>                 <C>                <C>
ILLINOIS--7.6%           Chicago, Illinois Midway Airport Revenue
                         Bonds, Series A, MBIA Insured, 6.25%, 1/1/14        Aaa/AAA             $  500,000          $  482,071
                         ------------------------------------------------------------------------------------------------------
                         Cook County, Illinois Community College District
                         No. 508 Certificates of Participation:
                         FGIC Insured, 8.75%, 1/1/05                         Aaa/AAA/AAA            500,000             612,288
                         Lease Certificates, Series C,
                         MBIA Insured, 7.70%, 12/1/07                        Aaa/AAA              2,500,000           2,863,110
                         ------------------------------------------------------------------------------------------------------
                         Illinois Health Facilities Authority Revenue Bonds,
                         Memorial Medical Center Project, MBIA Insured,
                         6.75%, 10/1/11                                      Aaa/AAA              2,000,000           2,069,036
                                                                                                                    -----------
                                                                                                                      6,026,505

- -------------------------------------------------------------------------------------------------------------------------------
INDIANA--5.8%            Fort Wayne, Indiana Hospital Authority Revenue
                         Bonds, Parkview Memorial Hospital Project,
                         Series A, FGIC Insured, 7.50%, 11/15/11             Aaa/AAA/AAA            250,000             270,579
                         ------------------------------------------------------------------------------------------------------
                         Hamilton Southeastern, Indiana Consolidated
                         School Building Corp. Revenue Refunding Bonds,
                         Fst. Mtg., AMBAC Insured, 7%, 7/1/11                Aaa/AAA/AAA            500,000             535,303
                         ------------------------------------------------------------------------------------------------------
                         Indiana Health Facilities Financing Authority
                         Hospital Revenue Bonds, Community
                         Hospital of Indiana, MBIA Insured, 7%, 7/1/21       Aaa/AAA                500,000             528,717
                         ------------------------------------------------------------------------------------------------------
                         Indiana State Office Building Revenue
                         Bonds, Commission Capital Complex,
                         Series B, MBIA Insured, 7.40%, 7/1/15               Aaa/AAA              2,500,000           2,757,040
                         ------------------------------------------------------------------------------------------------------
                         Whitko, Indiana Middle School Building Corp.
                         Revenue Bonds, Fst. Mtg., AMBAC Insured,
                         6.75%, 7/15/12                                      Aaa/AAA/AAA            500,000             513,624
                                                                                                                    -----------
                                                                                                                      4,605,263

- -------------------------------------------------------------------------------------------------------------------------------
KANSAS--1.3%             Burlington, Kansas Pollution Control Revenue
                         Refunding Bonds, Kansas Gas and Electric Co.
                         Project, MBIA Insured, 7%, 6/1/31                   Aaa/AAA              1,000,000           1,055,228
- -------------------------------------------------------------------------------------------------------------------------------
MASSACHUSETTS--6.8%      Massachusetts State General Obligation Bonds,
                         FGIC Insured, 7.875%, 6/1/97                        Aaa/AAA/AAA          1,500,000           1,615,891
                         ------------------------------------------------------------------------------------------------------
                         Massachusetts State Health & Educational
                         Facilities Revenue Bonds, Lahey Clinic Medical
                         Center, Series B, MBIA Insured, 5.625%, 7/1/15      Aaa/AAA              2,000,000           1,802,900
                         ------------------------------------------------------------------------------------------------------
                         Massachusetts State Housing Finance
                         Revenue Bonds, Series A, AMBAC Insured,
                         6.60%, 7/1/14                                       Aaa/AAA/AAA          2,000,000           1,990,998
                                                                                                                    -----------
                                                                                                                      5,409,789

- -------------------------------------------------------------------------------------------------------------------------------
MICHIGAN--3.5%           Detroit, Michigan Sewage Disposal System Revenue
                         Refunding Bonds, FGIC Insured, 7.72%, 7/1/23(1)     Aaa/AAA/AAA          2,000,000           1,529,110
                         ------------------------------------------------------------------------------------------------------
                         Lansing, Michigan Sewer Disposal Revenue
                         Refunding Bonds, FGIC Insured, 5.85%, 5/1/14        Aaa/AAA/AAA          1,000,000             946,479
                         ------------------------------------------------------------------------------------------------------
                         Michigan Municipal Board Authority Revenue
                         Bonds, Local Government, Group 19, AMBAC
                         Insured, 7.50%, 11/1/09                             Aaa/AAA/AAA            250,000             272,448
                                                                                                                    -----------
                                                                                                                      2,748,037

</TABLE>






5  Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   6
STATEMENT OF INVESTMENTS (Continued)


<TABLE>
<CAPTION>
                                                                            RATINGS: MOODY'S/
                                                                            S&P'S/FITCH'S        FACE              MARKET VALUE
                                                                            (UNAUDITED)          AMOUNT            SEE NOTE 1
- -------------------------------------------------------------------------------------------------------------------------------
<S>                      <C>                                                 <C>                 <C>                <C>
NEBRASKA--0.7%           Nebraska Investment Finance Authority Hospital
                         Revenue Bonds, Nebraska Methodist Health System,
                         MBIA Insured, 7%, 3/1/06                            Aaa/AAA             $  500,000         $   532,776
- -------------------------------------------------------------------------------------------------------------------------------
NEVADA--4.1%             Clark County, Nevada School District General
                         Obligation Bonds, Series B, MBIA Insured, 6.75%,
                         3/1/08                                              Aaa/AAA              2,000,000           2,080,590
                         ------------------------------------------------------------------------------------------------------
                         Humboldt County, Nevada Pollution Control
                         Revenue Bonds, Idaho Power Co. Project,
                         AMBAC Insured, 8.30%, 12/20/14                      Aaa/AAA/AAA          1,000,000           1,159,136
                                                                                                                    -----------
                                                                                                                      3,239,726

- -------------------------------------------------------------------------------------------------------------------------------
NEW HAMPSHIRE--0.6%      New Hampshire Turnpike System Revenue
                         Refunding Bonds, Series A, FGIC Insured,
                         6.75%, 11/1/11                                      Aaa/AAA/AAA            500,000             523,153
- -------------------------------------------------------------------------------------------------------------------------------
NEW JERSEY--4.0%         Bergen County, New Jersey Utilities Authority
                         Water Pollution Control Revenue Bonds, Series A,
                         FGIC Insured, 6.50%, 12/15/12                       Aaa/AAA/AAA            500,000             509,664
                         ------------------------------------------------------------------------------------------------------
                         East Orange, New Jersey General Obligation Bonds,
                         FSA Insured, 8.40%, 8/1/06                          Aaa/AAA              1,000,000           1,216,439
                         ------------------------------------------------------------------------------------------------------
                         Union City, New Jersey General Obligation Bonds,
                         FSA Insured, 6.375%, 11/1/10                        Aaa/AAA              1,435,000           1,471,293
                                                                                                                    -----------
                                                                                                                      3,197,396

- -------------------------------------------------------------------------------------------------------------------------------
NEW YORK--16.3%          New York City Municipal Water Finance Authority
                         Revenue Refunding Bonds, Water and Sewer
                         System Project:
                         Series B, AMBAC Insured, 5.375%, 6/15/19            Aaa/AAA/AAA          1,805,000           1,559,581
                         Series B, MBIA Insured, 5.375%, 6/15/19             Aaa/AAA/A            1,000,000             861,840
                         Series F, AMBAC Insured, 5.50%, 6/15/11             Aaa/AAA/AAA          4,000,000           3,699,052
                         ------------------------------------------------------------------------------------------------------
                         New York State Medical Care Facilities Finance
                         Agency Revenue Bonds, Mental Health Services
                         Facilities Improvement Project:
                         Prerefunded, Series A, MBIA Insured, 7.75%,
                         8/15/10                                             Aaa/AAA                235,000             267,402
                         Prerefunded, Series B, CGIC Insured, 7.875%,
                         8/15/15                                             Baa1/AAA/AAA           500,000             560,836
                         Unrefunded Balance, MBIA Insured, 7.75%, 8/15/10    Aaa/AAA                370,000             408,317
                         ------------------------------------------------------------------------------------------------------
                         New York State Urban Development Corp. Revenue
                         Refunding Bonds, Correctional Facilities Capital
                         Project, Series A, FSA Insured, 5.25%, 1/1/14       Aaa/AAA/A            4,115,000           3,570,433
                         ------------------------------------------------------------------------------------------------------
                         Suffolk County, New York Industrial Development
                         Authority Revenue Bonds, Southwest Sewer
                         System, FGIC Insured, 6%, 2/1/07                    Aaa/AAA/AAA          2,000,000           2,018,908
                                                                                                                    -----------
                                                                                                                     12,946,369

- -------------------------------------------------------------------------------------------------------------------------------
OHIO--1.8%               Ohio Municipal Electric Generation Agency
                         Revenue Bonds, Joint Venture No. 5, AMBAC
                         Insured, 5.625%, 2/15/16                            Aaa/AAA/AAA          1,000,000             909,746
                         ------------------------------------------------------------------------------------------------------
                         Streetsboro, Ohio City School District General
                         Obligation Bonds, AMBAC Insured, 7.125%, 12/1/10    Aaa/AAA/AAA            500,000             546,489
                                                                                                                    -----------
                                                                                                                      1,456,235


</TABLE>
6  Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   7
<TABLE>
<CAPTION>
                                                                           RATINGS: MOODY'S/
                                                                           S&P'S/FITCH'S        FACE               MARKET VALUE
                                                                           (UNAUDITED)          AMOUNT             SEE NOTE 1
- -------------------------------------------------------------------------------------------------------------------------------
<S>                      <C>                                                 <C>                 <C>                <C>
OKLAHOMA--3.0%           Grove, Oklahoma Municipal Services Authority
                         Utility and Sales Tax Revenue Bonds, Series 1991,
                         CGIC Insured, 7%, 2/1/16                            Aaa/AAA             $1,115,000          $1,157,569
                         ------------------------------------------------------------------------------------------------------
                         Norman, Oklahoma Regional Hospital Authority
                         Revenue Bonds, MBIA Insured, 6.90%, 9/1/21          Aaa/AAA                500,000             516,755
                         ------------------------------------------------------------------------------------------------------
                         Oklahoma Baptist University Authority Revenue
                         Bonds, FGIC Insured, 7.10%, 8/1/09                  Aaa/AAA/AAA            150,000             159,075
                         ------------------------------------------------------------------------------------------------------
                         Tulsa, Oklahoma Airports Improvement Trust
                         Consolidated General Revenue Bonds, MBIA
                         Insured, 7.50%, 6/1/08                              Aaa/AAA                500,000             537,216
                                                                                                                    -----------
                                                                                                                      2,370,615

- -------------------------------------------------------------------------------------------------------------------------------
PENNSYLVANIA--8.9%       Allegheny County, Pennsylvania Hospital
                         Development Authority Revenue Bonds,
                         Presbyterian University Hospital, Prerefunded,
                         Series A, MBIA Insured, 7.60%, 3/1/08               Aaa/AAA              1,400,000           1,492,442
                         ------------------------------------------------------------------------------------------------------
                         Berks County, Pennsylvania General
                         Obligation Bonds, FGIC Insured, 6.30%, 11/10/20     Aaa/AAA              2,000,000           2,060,100
                         ------------------------------------------------------------------------------------------------------
                         Butler County, Pennsylvania Hospital Authority
                         Revenue Bonds, North Hills Passavant Hospital,
                         Series A, CGIC Insured, 7%, 6/1/22                  Aaa/AAA                200,000             212,511
                         ------------------------------------------------------------------------------------------------------
                         Pennsylvania State Higher Education
                         Assistance Agency Student Loan Residual
                         Interest Revenue Bonds, Series 1992B,
                         AMBAC Insured, 8.77%, 3/1/22(1)                     Aaa/AAA/AAA          1,250,000           1,075,997
                         ------------------------------------------------------------------------------------------------------
                         Philadelphia, Pennsylvania Regional
                         Port Authority Lease Revenue Bonds,
                         MBIA Insured, 8.87%, 9/1/20(1)                      Aaa/AAA              1,900,000           1,735,538
                         ------------------------------------------------------------------------------------------------------
                         Philadelphia, Pennsylvania School
                         District  General Obligation Bonds,
                         Series A, MBIA Insured, 5.75%, 7/1/07               Aaa/AAA                500,000             489,787
                                                                                                                    -----------
                                                                                                                      7,066,375

- -------------------------------------------------------------------------------------------------------------------------------
SOUTH CAROLINA--1.1%     Florence County, South Carolina School District
                         No. 003 Certificates of Participation, Series B,
                         CGIC Insured, 7%, 1/1/11                            Aaa/AAA                310,000             321,890
                         ------------------------------------------------------------------------------------------------------
                         Sumter County, South Carolina School District
                         No. 017, Certificates of Participation, Series A,
                         CGIC Insured, 7.125%, 1/1/11                        Aaa/AAA                500,000             530,758
                                                                                                                    -----------
                                                                                                                        852,648

- -------------------------------------------------------------------------------------------------------------------------------
TEXAS--6.8%              Austin, Texas Combined Utility Systems Revenue
                         Refunding Bonds, Series A, MBIA Insured, 0%,
                         11/15/09                                            Aaa/AAA              3,615,000           1,408,490
                         ------------------------------------------------------------------------------------------------------
                         Dallas/Fort Worth, Texas Regional Airport Revenue
                         Bonds, FGIC Insured, 6.50%, 11/1/11                 Aaa/AAA/AAA          1,600,000           1,620,928
                         ------------------------------------------------------------------------------------------------------
                         Houston, Texas Certificates of Participation,
                         Water Conveyance System Project, Series J, AMBAC
                         Insured, 6.125%, 12/15/08                           Aaa/AAA/AAA          2,345,000           2,366,923
                                                                                                                    -----------
                                                                                                                      5,396,341


</TABLE>

7  Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   8
STATEMENTS OF INVESTMENTS (Continued)

<TABLE>
<CAPTION>
                                                                           RATINGS: MOODY'S/
                                                                           S&P'S/FITCH'S        FACE               MARKET VALUE
                                                                           (UNAUDITED)          AMOUNT             SEE NOTE 1
- -------------------------------------------------------------------------------------------------------------------------------
<S>                                                                          <C>                 <C>                <C>
VIRGINIA--1.8%           Norfolk, Virginia Water Revenue Bonds,
                         AMBAC Insured, 5.25%, 11/1/13                       Aaa/AAA/AAA         $1,000,000         $   869,283
                         ------------------------------------------------------------------------------------------------------
                         Roanoke, Virginia Industrial Development
                         Authority Hospital Revenue Bonds, Roanoke
                         Memorial Hospital Project-Carilion Health,
                         Prerefunded, MBIA Insured, 7.25%, 7/1/10            Aaa/AAA                500,000             556,202
                                                                                                                    -----------
                                                                                                                      1,425,485

- -------------------------------------------------------------------------------------------------------------------------------
WASHINGTON--1.0%         Washington State Public Power Supply
                         System Revenue Refunding Bonds, Series A,
                         FGIC Insured, 0%, 7/1/09                            Aaa/AAA/AAA          2,000,000             770,642
- -------------------------------------------------------------------------------------------------------------------------------
WISCONSIN--1.3%          Wisconsin State Health & Educational
                         Facilities Authority Revenue Bonds:
                         Novus Health Group, Series B,
                         MBIA Insured, 6.75%, 12/15/20                       Aaa/AAA                500,000             504,704
                         SSM Healthcare Projects, Prerefunded,
                         Series B, MBIA Insured, 7%, 6/1/20                  Aaa/AAA                500,000             549,574
                                                                                                                    -----------
                                                                                                                      1,054,278

- -------------------------------------------------------------------------------------------------------------------------------
U.S. POSSESSIONS--2.4%   Puerto Rico Commonwealth Linked Revenue
                         Bonds, MBIA/FSA Insured, 5.831%, 7/1/20             Aaa/AAA/AAA          2,000,000           1,890,478

- -------------------------------------------------------------------------------------------------------------------------------
TOTAL INVESTMENTS, AT VALUE (COST $80,017,715)                                                        97.9%          77,734,323
- -------------------------------------------------------------------------------------------------------------------------------
OTHER ASSETS NET OF LIABILITIES                                                                        2.1            1,629,144
                                                                                                 ---------          -----------
NET ASSETS                                                                                           100.0%         $79,363,467
                                                                                                 =========          ===========
</TABLE>

                         (1) Represents the current interest rate for a 
                         variable rate bond. Variable rate bonds known as 
                         "inverse floaters" pay interest at a rate that varies
                         inversely with short-term interest rates. As interest 
                         rates rise, inverse floaters produce less current 
                         income.  Their price may be more volatile than the 
                         price of a comparable fixed-rate security.  See 
                         accompanying Notes to Financial Statements.  
                                                                      
                                                                               

8  Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   9
STATEMENT OF ASSETS AND LIABILITIES  September 30, 1994

<TABLE>
=========================================================================================================================
<S>                           <C>                                                                             <C>
ASSETS                        Investments, at value (cost $80,017,715)--see accompanying statement            $77,734,323
                              -------------------------------------------------------------------------------------------
                              Cash                                                                                 16,208
                              -------------------------------------------------------------------------------------------
                              Receivables:
                              Interest                                                                          1,218,784
                              Shares of beneficial interest sold                                                  898,539
                              -------------------------------------------------------------------------------------------
                              Other                                                                                 6,071
                                                                                                             ------------
                              Total assets                                                                     79,873,925

=========================================================================================================================
LIABILITIES                   Payables and other liabilities:
                              Dividends                                                                           234,852
                              Shares of beneficial interest redeemed                                              164,218
                              Distribution and service plan fees--Note 4                                           48,163
                              Other                                                                                63,225
                                                                                                             ------------
                              Total liabilities                                                                   510,458

=========================================================================================================================
NET ASSETS                                                                                                    $79,363,467
                                                                                                             ============

=========================================================================================================================
COMPOSITION OF                Paid-in capital                                                                 $82,436,070
NET ASSETS                    -------------------------------------------------------------------------------------------
                              Undistributed net investment income                                                  20,250
                              -------------------------------------------------------------------------------------------
                              Accumulated net realized loss from investment transactions                         (809,461)
                              -------------------------------------------------------------------------------------------
                              Net unrealized depreciation on investments--Note 3                               (2,283,392)
                                                                                                             ------------
                              Net assets                                                                      $79,363,467
                                                                                                             ============

=========================================================================================================================
NET ASSET VALUE               Class A Shares:
PER SHARE                     Net asset value and redemption price per share (based on net assets
                              of $67,792,867 and 4,201,168 shares of beneficial interest outstanding)              $16.14
                              Maximum offering price per share (net asset value plus sales charge
                              of 4.75% of offering price)                                                          $16.94

                              -------------------------------------------------------------------------------------------
                              Class B Shares:
                              Net asset value, redemption price and offering price per share (based on
                              net assets of $11,570,600 and 716,638 shares of beneficial interest
                              outstanding)                                                                         $16.15

</TABLE>
                              See accompanying Notes to Financial Statements.




9  Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   10
STATEMENT OF OPERATIONS  For the Year Ended September 30, 1994

<TABLE>

=========================================================================================================================
<S>                                                                                                           <C>
INVESTMENT INCOME             Interest                                                                        $ 4,780,017
=========================================================================================================================
EXPENSES                      Management fees--Note 4                                                             342,465
                              -------------------------------------------------------------------------------------------
                              Distribution and service plan fees:
                              Class A--Note 4                                                                     162,106
                              Class B--Note 4                                                                      92,013
                              -------------------------------------------------------------------------------------------
                              Registration and filing fees:
                              Class A                                                                              81,961
                              Class B                                                                              13,464
                              -------------------------------------------------------------------------------------------
                              Transfer and shareholder servicing agent fees--Note 4                                85,934
                              -------------------------------------------------------------------------------------------
                              Shareholder reports                                                                  55,261
                              -------------------------------------------------------------------------------------------
                              Legal and auditing fees                                                              12,000
                              -------------------------------------------------------------------------------------------
                              Custodian fees and expenses                                                           5,321
                              -------------------------------------------------------------------------------------------
                              Trustees' fees and expenses                                                           1,877
                              -------------------------------------------------------------------------------------------
                              Other                                                                                21,271
                                                                                                              -----------
                              Total expenses                                                                      873,673

=========================================================================================================================
NET INVESTMENT INCOME                                                                                           3,906,344

=========================================================================================================================
REALIZED AND UNREALIZED       Net realized loss on investments                                                   (811,863)
LOSS ON INVESTMENTS           -------------------------------------------------------------------------------------------
                              Net change in unrealized appreciation or depreciation on investments             (7,639,229)
                                                                                                              -----------
                              Net realized and unrealized loss on investments                                  (8,451,092)

=========================================================================================================================
NET DECREASE IN NET ASSETS RESULTING FROM OPERATIONS                                                          $(4,544,748)
                                                                                                              ===========
                              See accompanying Notes to Financial Statements.

</TABLE>



10  Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   11
STATEMENTS OF CHANGES IN NET ASSETS

<TABLE>              
<CAPTION>
                                                                                                        YEAR ENDED SEPTEMBER 30,
                                                                                                        1994           1993
===================================================================================================================================
<S>                     <C>                                                                             <C>             <C>
OPERATIONS              Net investment income                                                           $ 3,906,344     $ 2,520,182
                        -----------------------------------------------------------------------------------------------------------
                        Net realized gain (loss) on investments                                            (811,863)        242,996
                        -----------------------------------------------------------------------------------------------------------
                        Net change in unrealized appreciation or depreciation on investments             (7,639,229)      3,653,486
                                                                                                       ------------    ------------
                        Net increase (decrease) in net assets resulting from operations                  (4,544,748)      6,416,664

===================================================================================================================================
DIVIDENDS AND           Dividends from net investment income:
DISTRIBUTIONS TO        Class A ($.8620 and $.96 per share, respectively)                                (3,348,993)     (2,518,298)
SHAREHOLDERS            Class B ($.7310 and $.30 per share, respectively)                                  (388,291)        (38,890)
                        -----------------------------------------------------------------------------------------------------------
                        Dividends in excess of net investment income:
                        Class A ($.0282 per share)                                                         (109,723)             --
                        Class B ($.0240 per share)                                                          (12,722)             --
                        -----------------------------------------------------------------------------------------------------------
                        Distributions from net realized gain on investments:
                        Class A ($.0763 and $.18 per share, respectively)                                  (279,752)       (387,637)
                        Class B ($.0763 per share)                                                          (27,180)             --

===================================================================================================================================
BENEFICIAL INTEREST     Net increase in net assets resulting from Class A
TRANSACTIONS            beneficial interest transactions--Note 2                                         13,295,652      25,043,911
                        -----------------------------------------------------------------------------------------------------------
                        Net increase in net assets resulting from Class B
                        beneficial interest transactions--Note 2                                          7,516,981       4,995,749
                     
===================================================================================================================================
NET ASSETS              Total increase                                                                   12,101,224      33,511,499
                        -----------------------------------------------------------------------------------------------------------
                        Beginning of year                                                                67,262,243      33,750,744
                                                                                                       ------------    ------------
                        End of year (including undistributed net investment
                        income of $20,250 and $64,446, respectively)                                    $79,363,467     $67,262,243
                                                                                                       ============    ============
                     
                        See accompanying Notes to Financial Statements.

</TABLE>


11  Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   12
FINANCIAL HIGHLIGHTS

<TABLE>
<CAPTION>
                            CLASS A                                                              
                            -------------------------------------------------------------------
                            YEAR ENDED                                                           
                            SEPTEMBER 30,                                                        
                            1994            1993      1992       1991        1990(3)     1989    
===============================================================================================
<S>                         <C>             <C>      <C>         <C>         <C>         <C>     
PER SHARE OPERATING DATA:                                                                        
Net asset value, beginning                                                                       
of period                   $18.06          $16.92    $16.17     $15.16      $15.27      $14.96  
- -----------------------------------------------------------------------------------------------
Income (loss) from                                                                               
investment operations:                                                                          
Net investment income          .89             .93       .96        .92         .98        1.06  
Net realized and                                                                                 
unrealized gain                                                                                 
(loss) on investments        (1.84)           1.35       .73       1.01        (.11)        .31  
                            ------           -----     -----      -----       -----       -----  
Total income (loss) from                                                                         
investment                                                                                      
operations                    (.95)           2.28      1.69       1.93         .87        1.37  
                                                                                                 
- -----------------------------------------------------------------------------------------------
Dividends and                                                                                    
distributions to                                                                                
shareholders:                                                                                   
Dividends from net                                                                               
investment income             (.86)           (.96)     (.91)      (.92)       (.98)      (1.06) 
Dividends in excess                                                                              
of net investment                                                                                       
income                        (.03)             --        --         --          --          --  
Distributions from net                                                                           
realized gain on                                                                                
investments                   (.08)           (.18)     (.03)        --          --          --  
                            ------           -----     -----      -----       -----       -----  
Total dividends and                                                                              
distributions to                                                                                
shareholders                  (.97)          (1.14)     (.94)      (.92)       (.98)      (1.06) 
- -----------------------------------------------------------------------------------------------
Net asset value,                                                                                 
end of period               $16.14          $18.06    $16.92     $16.17      $15.16      $15.27  
                            ======          ======    ======     ======      ======      ======  
                                                                                                 
===============================================================================================
TOTAL RETURN, AT                                                                                 
NET ASSET VALUE(4)           (5.46)%         14.02%    10.74%     13.08%       5.81%       9.37% 
                                                                                                 
===============================================================================================
RATIOS/SUPPLEMENTAL DATA:                                                                        
Net assets, end of period                                                                        
(in thousands)             $67,793         $62,158   $33,751    $23,791     $16,863     $13,105  
- -----------------------------------------------------------------------------------------------
Average net assets                                                                               
(in thousands)             $66,953         $45,949   $27,811    $19,936     $15,145     $11,200  
- -----------------------------------------------------------------------------------------------
Number of shares                                                                                 
outstanding                                                                                     
at end of period                                                                                
(in thousands)               4,201           3,442     1,995      1,471       1,113         858  
- -----------------------------------------------------------------------------------------------
Ratios to average net                                                                            
assets:                                                                                         
Net investment income         5.23%           5.40%     5.81%      5.83%       6.43%       6.87% 
Expenses, before voluntary                                                                       
assumption by                                                                                   
the Manager                   1.05%           1.18%     1.35%      1.60%       1.62%       2.04% 
Expenses, net of voluntary                                                                       
assumption by the Manager     N/A             1.10%      .95%       .91%        .62%        .42% 
- -------------------------------------------------------------------------------------------------
Portfolio turnover rate(6)      99%              7%       47%        67%         62%        142% 
</TABLE>


<TABLE>
<CAPTION>
                             CLASS A                  CLASS B                     
                             -------------------      ------------------------    
                             YEAR ENDED               YEAR ENDED                  
                             SEPTEMBER 30,            SEPTEMBER 30,               
                             1988        1987(2)      1994             1993(1)    
==============================================================================    
<S>                          <C>         <C>         <C>               <C>        
PER SHARE OPERATING DATA:                                                         
Net asset value, beginning                                                        
of period                    $13.79      $16.00       $18.07            $17.33    
- ------------------------------------------------------------------------------    
Income (loss) from                                                                
investment operations:                                                           
Net investment income          1.07         .92          .77               .30    
Net realized and                                                                  
unrealized gain                                                                  
(loss) on investments          1.17       (2.21)       (1.86)              .74    
                              -----       -----        -----             -----    
Total income (loss) from                                                          
investment                                                                       
operations                     2.24       (1.29)       (1.09)             1.04    
                                                                                  
- ------------------------------------------------------------------------------    
Dividends and                                                                     
distributions to                                                                 
shareholders:                                                                    
Dividends from net                                                                
investment income             (1.07)       (.92)        (.73)             (.30)   
Dividends in excess                                                               
of net                                                                            
investment                                                                        
income                           --          --         (.02)               --    
Distributions from net                                                            
realized gain on                                                                 
investments                      --          --         (.08)               --    
                              -----       -----        -----             -----    
Total dividends and                                                               
distributions to                                                                 
shareholders                  (1.07)       (.92)        (.83)             (.30)   
- ------------------------------------------------------------------------------    
Net asset value,                                                                  
end of period                $14.96      $13.79       $16.15            $18.07    
                             ======      ======       ======            ======    
                                                                                  
==============================================================================    
TOTAL RETURN, AT                                                                  
NET ASSET VALUE(4)            16.67%      (8.36)%      (6.20)%            6.04%   
                                                                                  
==============================================================================    
RATIOS/SUPPLEMENTAL DATA:                                                         
Net assets, end of period                                                         
(in thousands)               $8,483      $5,449      $11,571            $5,104    
- ------------------------------------------------------------------------------    
Average net assets                                                                
(in thousands)               $6,936      $5,435      $ 9,209            $2,298    
- ------------------------------------------------------------------------------    
Number of shares                                                                  
outstanding                                                                      
at end of period                                                                 
(in thousands)                  567         395          717               282    
- ------------------------------------------------------------------------------    
Ratios to average net                                                             
assets:                                                                          
Net investment income          7.34%       6.69%(5)     4.43%             3.99%(5)
Expenses, before voluntary                                                        
assumption by                                                                    
the Manager                    2.50%       2.98%(5)     1.82%             1.96%(5)
Expenses, net of voluntary                                                        
assumption by the Manager       .13%        .34%(5)      N/A              N/A     
- ------------------------------------------------------------------------------    
Portfolio turnover rate(6)      141%        112%         99%                 7%   
</TABLE>
                           
(1) For the period from May 3, 1993 (inception of offering) to September 30,
1993.

(2) For the period from November 11, 1986 (commencement of operations) to
September 30, 1987.

(3) On April 7, 1990, Oppenheimer Management Corporation became the investment
advisor to the Fund.

(4) Assumes a hypothetical initial investment on the business day before the
first day of the fiscal period, with all dividends and distributions reinvested
in additional shares on the reinvestment date, and redemption at the net asset
value calculated on the last business day of the fiscal period. Sales charges
are not reflected in the total returns.

(5) Annualized.

(6) The lesser of purchases or sales of portfolio securities for a period,
divided by the monthly average of the market value of portfolio securities
owned during the period. Securities with a maturity or expiration date at the
time of acquisition of one year or less are excluded from the calculation.
Purchases and sales of investment securities (excluding short-term securities)
for the year ended September 30, 1994 were $97,142,573 and $74,122,758,
respectively.

See accompanying Notes to Financial Statements.



12  Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   13
NOTES TO FINANCIAL STATEMENTS

<TABLE>
<S>                         <C>
===================================================================================================================================
1. SIGNIFICANT              Oppenheimer Insured Tax-Exempt Bond Fund (the Fund) is a separate series of Oppenheimer Tax-Exempt
   ACCOUNTING POLICIES      Bond Fund, a diversified, open-end management investment company registered under the Investment
                            Company Act of 1940, as amended. The Fund's investment advisor is Oppenheimer Management Corporation
                            (the Manager). The Fund offers both Class A and Class B shares. Class A shares are sold with a front-
                            end sales charge. Class B shares may be subject to a contingent deferred sales charge. Both classes
                            of shares have identical rights to earnings, assets and voting privileges, except that each class has
                            its own distribution and/or service plan, expenses directly attributable to a particular class and
                            exclusive voting rights with respect to matters affecting a single class. Class B shares will
                            automatically convert to Class A shares six years after the date of purchase. The following is a
                            summary of significant accounting policies consistently followed by the Fund.

                            -------------------------------------------------------------------------------------------------------
                            INVESTMENT VALUATION. Portfolio securities are valued at 4:00 p.m. (New York time) on each trading
                            day. Long-term debt securities are valued by a portfolio pricing service approved by the Board of
                            Trustees. Long-term debt securities which cannot be valued by the approved portfolio pricing service
                            are valued by averaging the mean between the bid and asked prices obtained from two active market
                            makers in such securities. Short-term debt securities having a remaining maturity of 60 days or less
                            are valued at cost (or last determined market value) adjusted for amortization to maturity of any
                            premium or discount. Securities for which market quotes are not readily available are valued under
                            procedures established by the Board of Trustees to determine fair value in good faith.

                            -------------------------------------------------------------------------------------------------------
                            ALLOCATION OF INCOME, EXPENSES AND GAINS AND LOSSES. Income, expenses (other than those attributable
                            to a specific class) and gains and losses are allocated daily to each class of shares based upon the
                            relative proportion of net assets represented by such class. Operating expenses directly attributable
                            to a specific class are charged against the operations of that class.

                            -------------------------------------------------------------------------------------------------------
                            FEDERAL INCOME TAXES. The Fund intends to continue to comply with provisions of the Internal Revenue
                            Code applicable to regulated investment companies and to distribute all of its taxable income,
                            including any net realized gain on investments not offset by loss carryovers, to shareholders.
                            Therefore, no federal income tax provision is required.

                            -------------------------------------------------------------------------------------------------------
                            DISTRIBUTIONS TO SHAREHOLDERS. The Fund intends to declare dividends separately for Class A and
                            Class B shares from net investment income each day the New York Stock Exchange is open for business
                            and pay such dividends monthly. Distributions from net realized gains on investments, if any, will
                            be declared at least once each year.

                            -------------------------------------------------------------------------------------------------------
                            CHANGE IN ACCOUNTING FOR DISTRIBUTIONS TO SHAREHOLDERS. Effective October 1, 1993, the Fund adopted
                            Statement of Position 93-2: Determination, Disclosure, and Financial Statement Presentation of
                            Income, Capital Gain, and Return of Capital Distributions by Investment Companies. As a result, the
                            Fund changed the classification of distributions to shareholders to better disclose the differences
                            between financial statement amounts and distributions determined in accordance with income tax
                            regulations. Accordingly, subsequent to September 30, 1993, amounts have been reclassified to
                            reflect a decrease in paid-in capital of $2,641, a decrease in undistributed net investment income
                            of $55,349, and a decrease in undistributed capital loss on investments of $57,990. During the year
                            ended September 30, 1994, in accordance with Statement of Position 93-2, paid-in capital was
                            increased by $2,432, undistributed net investment income was decreased by $35,462 and undistributed
                            capital loss was decreased by $33,030.

                            -------------------------------------------------------------------------------------------------------
                            OTHER. Investment transactions are accounted for on the date the investments are purchased or sold
                            (trade date). Original issue discount on securities purchased is amortized over the life of the
                            respective securities, in accordance with federal income tax requirements. Realized gains and losses
                            on investments and unrealized appreciation and depreciation are determined on an identified cost
                            basis, which is the same basis used for federal income tax purposes. For bonds acquired after April
                            30, 1993, accrued market discount is recognized at maturity or disposition as taxable ordinary
                            income. Taxable ordinary income is realized to the extent of the lesser of gain or accrued market
                            discount.
</TABLE>

13  Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   14
NOTES TO FINANCIAL STATEMENTS (Continued)


<TABLE>
<S>                         <C>
==========================================================================================================================
2. SHARES OF                The Fund has authorized an unlimited number of no par value shares of beneficial interest of
   BENEFICIAL INTEREST      each class. Transactions in shares of beneficial interest were as follows:

</TABLE>


<TABLE>
<CAPTION>
                                                    YEAR ENDED SEPTEMBER 30, 1994         YEAR ENDED SEPTEMBER 30, 1993(1)
                                                    -----------------------------         --------------------------------
                                                    SHARES          AMOUNT                SHARES              AMOUNT
                            ----------------------------------------------------------------------------------------------
                            <S>                     <C>             <C>                   <C>                 <C>
                            Class A:
                            Sold                    1,358,474       $23,400,749           1,716,581           $29,729,902
                            Dividends and
                             distributions
                             reinvested               164,884         2,823,809             122,875             2,119,692
                            Redeemed                 (763,948)      (12,928,906)           (392,790)           (6,805,683)
                                                    ---------       -----------           ---------           -----------
                            Net increase              759,410       $13,295,652           1,446,666           $25,043,911
                                                    =========       ===========           =========           ===========

                            ----------------------------------------------------------------------------------------------
                            Class B:
                            Sold                      503,586       $ 8,682,918             281,944           $ 4,987,254
                            Dividends and
                             distributions
                             reinvested                15,806           267,832               1,056                18,887
                            Redeemed                  (85,174)       (1,433,769)               (580)              (10,392)
                                                    ---------       -----------           ---------           -----------
                            Net increase              434,218       $ 7,516,981             282,420           $ 4,995,749
                                                    =========       ===========           =========           ===========
</TABLE>


                            (1) For the year ended September 30, 1993 for Class
                            A shares and for the period from May 3, 1993
                            (inception of offering) to September 30, 1993 for
                            Class B shares.

<TABLE>
==========================================================================================================================
<S>                         <C>
3. UNREALIZED GAINS AND     At September 30, 1994, net unrealized depreciation on investments of $2,283,392 was composed
   LOSSES ON INVESTMENTS    of gross appreciation of $987,289, and gross depreciation of $3,270,681.

==========================================================================================================================
4. MANAGEMENT FEES          Management fees paid to the Manager were in accordance with the investment advisory agreement
   AND OTHER TRANSACTIONS   with the Fund, which provides for an annual fee of .45% on the first $100 million of net
   WITH AFFILIATES          assets, .40% on the next $150 million, .375% on the next $250 million and .35% on net assets
                            in excess of $500 million. The Manager has agreed to assume Fund expenses (with specified
                            exceptions) in excess of the most stringent applicable regulatory limit on Fund expenses.

                                     The Manager acts as the accounting agent for the Fund at an annual fee of $12,000,
                            plus out-of-pocket costs and expenses reasonably incurred.

                                     For the year ended September 30, 1994, commissions (sales charges paid by investors)
                            on sales of Class A shares totaled $376,541, of which $92,979 was retained by Oppenheimer
                            Funds Distributor, Inc. (OFDI), a subsidiary of the Manager, as general distributor, and by
                            an affiliated broker/dealer. During the year ended September 30, 1994, OFDI received
                            contingent deferred sales charges of $19,475 upon redemption of Class B shares, as
                            reimbursement for sales commissions advanced by OFDI at the time of sale of such shares.

                                     Oppenheimer Shareholder Services (OSS), a division of the Manager, is the transfer
                            and shareholder servicing agent for the Fund, and for other registered investment companies.
                            OSS's total costs of providing such services are allocated ratably to these companies.

                                     Under separate approved plans, each class may expend up to .25% of its net assets
                            annually to reimburse OFDI for costs incurred in connection with the personal service and
                            maintenance of accounts that hold shares of the Fund, including amounts paid to brokers,
                            dealers, banks and other financial institutions. In addition, Class B shares are subject
                            to an asset-based sales charge of .75% of net assets annually, to reimburse OFDI for sales
                            commissions paid from its own resources at the time of sale and associated financing costs.
                            In the event of termination or discontinuance of the Class B plan, the Board of Trustees may
                            allow the Fund to continue payment of the asset-based sales charge to OFDI for distribution
                            expenses incurred on Class B shares sold prior to termination or discontinuance of the plan.
                            During the year ended September 30, 1994, OFDI paid $5,920 and $125, respectively, to an
                            affiliated broker/dealer as reimbursement for Class A and Class B personal service and
                            maintenance expenses and retained $89,853 as reimbursement for Class B sales commissions and
                            service fee advances, as well as financing costs.
</TABLE>

14  Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   15
INDEPENDENT AUDITORS' REPORT

The Board of Trustees and Shareholders of Oppenheimer Insured Tax-Exempt Bond
Fund:

We have audited the accompanying statement of assets and liabilities, including
the statement of investments, of Oppenheimer Insured Tax-Exempt Bond Fund as of
September 30, 1994, the related statement of operations for the year then
ended, the statements of changes in net assets for the years ended September
30, 1994 and 1993 and the financial highlights for the period October 1, 1989
to September 30, 1994. These financial statements and financial highlights are
the responsibility of the Fund's management. Our responsibility is to express
an opinion on these financial statements and financial highlights based on our
audits. The financial highlights (except for total return) for the period
November 11, 1986 (commencement of operations) to September 30, 1989 were
audited by other auditors, whose report dated November 2, 1989 expressed an
unqualified opinion on those financial highlights.

         We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements and financial
highlights are free of material misstatement. An audit also includes examining,
on a test basis, evidence supporting the amounts and disclosures in the
financial statements. Our procedures included confirmation of securities owned
at September 30, 1994 by correspondence with the custodian. An audit also
includes assessing the accounting principles used and significant estimates
made by management, as well as evaluating the overall financial statement
presentation.  We believe that our audits provide a reasonable basis for our
opinion.

         In our opinion, such financial statements and financial highlights
present fairly, in all material respects, the financial position of Oppenheimer
Insured Tax-Exempt Bond Fund at September 30, 1994, the results of its
operations, the changes in its net assets, and the financial highlights for the
respective stated periods, in conformity with generally accepted accounting
principles.

DELOITTE & TOUCHE LLP

Denver, Colorado
October 21, 1994




15  Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   16
FEDERAL INCOME TAX INFORMATION  (Unaudited)

In early 1995, shareholders will receive information regarding all dividends
and distributions paid to them by the Fund during calendar year 1994.
Regulations of the U.S. Treasury Department require the Fund to report this
information to the Internal Revenue Service.

         A distribution of $.0763 per share, paid on December 10, 1993, was
designated as a "capital gain distribution" for federal income tax purposes.
Whether received in stock or cash, the capital gain distribution should be
treated by shareholders as a gain from the sale of capital assets held for more
than one year (long-term capital gains). Both short-term and long-term capital
gain distributions are subject to federal, state and local taxes.

         None of the dividends paid by the Fund during the fiscal year ended
September 30, 1994 is eligible for the corporate dividend-received deduction.
The dividends were derived from interest on municipal bonds and are not subject
to federal income tax. To the extent a shareholder is subject to any state or
local tax laws, some or all of the dividends received may be taxable.

         The foregoing information is presented to assist shareholders in
reporting distributions received from the Fund to the Internal Revenue Service.
Because of the complexity of the federal regulations that may affect your
individual tax return and the many variations in state and local tax
regulations, we recommend that you consult your tax advisor for specific
guidance.


16  Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   17
OPPENHEIMER INSURED TAX-EXEMPT BOND FUND
A Series Of Oppenheimer Tax-Exempt Bond Fund


<TABLE>
<S>                                 <C>
===================================================================================================================================
OFFICERS AND TRUSTEES               James C. Swain, Chairman and Chief Executive Officer
                                    Robert G. Avis, Trustee
                                    William A. Baker, Trustee
                                    Charles Conrad, Jr., Trustee
                                    Jon S. Fossel, Trustee and President
                                    Raymond J. Kalinowski, Trustee
                                    C. Howard Kast, Trustee
                                    Robert M. Kirchner, Trustee
                                    Ned M. Steel, Trustee
                                    Andrew J. Donohue, Vice President
                                    Caryn R. Halbrecht, Vice President
                                    Robert E. Patterson, Vice President
                                    George C. Bowen, Vice President, Secretary and Treasurer
                                    Robert J. Bishop, Assistant Treasurer
                                    Scott Farrar, Assistant Treasurer
                                    Robert G. Zack, Assistant Secretary
===================================================================================================================================
INVESTMENT ADVISOR                  Oppenheimer Management Corporation

===================================================================================================================================
DISTRIBUTOR                         Oppenheimer Funds Distributor, Inc.

===================================================================================================================================
TRANSFER AND SHAREHOLDER            Oppenheimer Shareholder Services
SERVICING AGENT

===================================================================================================================================
CUSTODIAN OF                        Citibank, N.A.
PORTFOLIO SECURITIES

===================================================================================================================================
INDEPENDENT AUDITORS                Deloitte & Touche LLP

===================================================================================================================================
LEGAL COUNSEL                       Myer, Swanson & Adams, P.C.

                                    This is a copy of a report to shareholders of Oppenheimer Insured Tax-Exempt
                                    Bond Fund. This report must be preceded or accompanied by a Prospectus of Oppenheimer
                                    Insured Tax-Exempt Bond Fund. For material information concerning the Fund, see the Prospectus.
</TABLE>

17  Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   18
OPPENHEIMERFUNDS FAMILY

<TABLE>
<S>                        <C>
===================================================================================================================================
                           OppenheimerFunds offers over 35 funds designed to fit virtually every investment goal. Whether you're
                           investing for retirement, your children's education or tax-free income, we have the funds to help you
                           seek your objective.

                                    When you invest with OppenheimerFunds, you can feel comfortable knowing that you are investing
                           with a respected financial institution with over 30 years of experience in helping people just like you
                           reach their financial goals. And you're investing with a leader in global, growth stock and flexible
                           fixed income investments--with over 1.8 million shareholder accounts and more than $26 billion under
                           Oppenheimer's management and that of our affiliates.

                                    As an OppenheimerFunds shareholder, you can easily exchange shares of eligible funds of the
                           same class by mail or by telephone for a small administrative fee.(1) For more information on
                           OppenheimerFunds, please contact your financial advisor or call us at 1-800-525-7048 for a prospectus.
                           You may also write us at the address shown on the back cover. As always, please read the prospectus
                           carefully before you invest.

===================================================================================================================================
STOCK FUNDS                Discovery Fund                            Global Fund
                           Global Emerging Growth Fund(2)            Oppenheimer Fund
                           Time Fund                                 Value Stock Fund
                           Target Fund                               Gold & Special Minerals Fund
                           Growth Fund(3)

===================================================================================================================================
STOCK & BOND FUNDS         Main Street Income & Growth Fund          Equity Income Fund
                           Total Return Fund                         Asset Allocation Fund
                           Global Growth & Income Fund

===================================================================================================================================
BOND FUNDS                 High Yield Fund                           Strategic Short-Term Income Fund
                           Champion High Yield Fund                  Investment Grade Bond Fund
                           Strategic Income & Growth Fund            Mortgage Income Fund
                           Strategic Income Fund                     U.S. Government Trust
                           Strategic Diversified Income Fund         Limited-Term Government Fund
                           Strategic Investment Grade Bond Fund

===================================================================================================================================
TAX-EXEMPT FUNDS           New York Tax-Exempt Fund(4)               New Jersey Tax-Exempt Fund(4)
                           California Tax-Exempt Fund(4)             Tax-Free Bond Fund
                           Pennsylvania Tax-Exempt Fund(4)           Insured Tax-Exempt Bond Fund
                           Florida Tax-Exempt Fund(4)                Intermediate Tax-Exempt Bond Fund

===================================================================================================================================
MONEY MARKET FUNDS         Money Market Fund                         Cash Reserves

                           (1) The fee is waived for PhoneLink exchanges between existing accounts.
                           Exchange privileges are subject to change or termination.

                           (2) Formerly Oppenheimer Global Bio-Tech Fund and Oppenheimer Global
                           Environment Fund.

                           (3) Formerly Special Fund.

                           (4) Available only to residents of those states.
                           OppenheimerFunds are distributed by Oppenheimer Funds Distributor, Inc., Two
                           World Trade Center, New York, NY 10048-0203. (C) Copyright 1994 Oppenheimer
                           Management Corporation. All rights reserved.
</TABLE>



18  Oppenheimer Insured Tax-Exempt Bond Fund
<PAGE>   19
'Talk to a Customer Service 
Representative.
Monday through Friday from 
8:30 a.m. to 8:00 p.m., and
Saturday from 10:00 a.m.
to 2:00 p.m. ET.

Make account transactions with a
Customer Service Representative.
Monday through Friday from
8:30 a.m. to 8:00 p.m. ET.

Get automated information or
make automated transcactions.
24 hours a day, 7 days a week.

Service for the hearing impaired.
Monday through Friday from
8:30 a.m. to 8:00 p.m. ET.

Hear timely and insightful
messages on the economy and
issues that affect your finances.
24 hours a day, 7 days a week.


"Just as OppenheimerFunds offers over 35 different mutual funds designed to
help meet virtually every investment need, Oppenheimer Shareholder Services
offers a variety of services to satisfy your individual needs.  Whenever you
require help, we're only a toll-free phone call away. 
          "For personalized assistance 
and account information, call our General 
Information number to speak with our             
knowledgeable Customer Service                   
Representatives and get the help you need.       [Photograph of
          "When you want to make account         Barbara Hennigar
transactions, it's easy for you to redeem        Chief Executive Officer
shares, exchange shares, or conduct              Oppenheimer Shareholder 
AccountLink transactions, simply by calling      Services.]
our Telephone Transactions number.               
          "And for added convenience,            
OppenheimerFunds' Phone Link, an automated       
voice response system is available 24 hours 
a day, 7 days a week.  PhoneLink gives you access to a variety of fund, 
                 account, and market information. You can even make purchases, 
- ------------     exchanges and redemptions using your touch-tone phone.  Of 
 1  9  9  3      course, PhoneLink will always give you the option to
  AWARD of       speak with a Customer Service Representative during the hours 
 EXCELLENCE      shown to the left.
 [LOGO] icsa               "When you invest in OppenheimerFunds, you know 
- ------------     you'll receive a high level of customer service.  The 
International    International Customer Service Association knows it, too, as 
   Customer      it awarded Oppenheimer Shareholder Services a 1993 Award of
   Service       Excellence for consistenly demonstrating superior customer 
 Association     service. 
                           "Whatever your needs, we're ready to assist you."
                   

[Logo] OppenheimerFunds(R)                                 -------------------
       Oppenheimer Funds Distributor, Inc.                 Bulk Rate
       P.O. Box 5270                                       U.S. Postage
       Denver, CO 80217-5270                               PAID
                                                           Permit No. 377
                                                           Hackensack, NJ
                                                           --------------------






                        


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