STRONG LIFE STAGE SERIES INC
NSAR-B, 2000-02-24
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<PAGE>      PAGE  1
000 B000000 12/31/99
000 C000000 0001072728
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 A
001 A000000 STRONG LIFE STAGE SERIES, INC.
001 B000000 811-9091
001 C000000 4145777366
002 A000000 P.O. BOX 2936
002 B000000 MILWAUKEE
002 C000000 WI
002 D010000 53201
002 D020000 2936
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
007 B000000  3
007 C010100  1
007 C020100 STRONG CONSERVATIVE PORTFOLIO
007 C030100 N
007 C010200  2
007 C020200 STRONG MODERATE PORTFOLIO
007 C030200 N
007 C010300  3
007 C020300 STRONG AGGRESSIVE PORTFOLIO
007 C030300 N
007 C010400  4
007 C010500  5
007 C010600  6
007 C010700  7
007 C010800  8
007 C010900  9
007 C011000 10
010 A00AA01 STRONG CAPITAL MANAGEMENT, INC.
010 B00AA01 801-10724
010 C01AA01 MILWAUKEE
010 C02AA01 WI
010 C03AA01 53201
010 C04AA01 2936
011 A00AA01 STRONG INVESTMENTS, INC.
011 B00AA01 8-10724
011 C01AA01 MILWAUKEE
011 C02AA01 WI
011 C03AA01 53201
011 C04AA01 2936
<PAGE>      PAGE  2
012 A00AA01 STRONG CAPITAL MANAGEMENT, INC.
012 B00AA01 84-1599
012 C01AA01 MILWAUKEE
012 C02AA01 WI
012 C03AA01 53201
012 C04AA01 2936
013 A00AA01 PRICEWATERHOUSECOOPERS LLP
013 B01AA01 MILWAUKEE
013 B02AA01 WI
013 B03AA01 53202
014 A00AA01 STRONG INVESTMENTS, INC.
014 B00AA01 8-32608
014 A00AA02 W.H. REAVES & COMPANY, INC.
014 B00AA02 8-22142
015 A00AA01 FIRSTAR BANK MILWAUKEE, N.A.
015 B00AA01 C
015 C01AA01 MILWAUKEE
015 C02AA01 WI
015 C03AA01 53202
015 E01AA01 X
015 A00AA02 DELETE
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022 C000001     47724
022 D000001      8072
022 A000002 ELAN INVESTMENT SERVICES, INC.
022 C000002     22442
022 D000002     19994
022 A000003 ABN-AMRO, INC.
022 C000003      9200
022 D000003         0
022 A000004 BARCLAYS DE ZOETE WEDD, INC.
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SIGNATURE   JOHN WIDMER
TITLE       TREASURER


<TABLE> <S> <C>


<ARTICLE>                  6
<CIK>             0001072728
<NAME>            "Strong Life Stage Series, Inc."
<SERIES>
     <NUMBER>              1
     <NAME>                Strong Conservative Portfolio


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</TABLE>

<TABLE> <S> <C>


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<CIK>             0001072728
<NAME>            "Strong Life Stage Series, Inc."
<SERIES>
     <NUMBER>              2
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</TABLE>

<TABLE> <S> <C>


<ARTICLE>                  6
<CIK>             0001072728
<NAME>            "Strong Life Stage Series, Inc."
<SERIES>
     <NUMBER>              3
     <NAME>                Strong Aggressive Portfolio


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<PER-SHARE-NAV-BEGIN>               10.00
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<PER-SHARE-DIVIDEND>                (0.07)
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</TABLE>


                        REPORT OF INDEPENDENT ACCOUNTANTS

To the Board of Directors of Strong Life Stage Series, Inc.
   and the Shareholders of Strong Aggressive Portfolio, Strong Conservative
Portfolio and Strong Moderate Portfolio

In planning and  performing  our audits of the  financial  statements  of Strong
Aggressive  Portfolio,   Strong  Conservative   Portfolio  and  Strong  Moderate
Portfolio (three of the portfolios  constituting Strong Life Stage Series, Inc.,
collectively referred to herein as the "Portfolios") for the year ended December
31, 1999, we considered its internal control,  including control  activities for
safeguarding  securities,  in order to determine our auditing procedures for the
purpose of expressing our opinion on the financial statements and to comply with
the requirements of Form N-SAR, not to provide assurance on internal control.

The  management of the Funds is responsible  for  establishing  and  maintaining
internal control. In fulfilling this responsibility,  estimates and judgments by
management  are  required to assess the expected  benefits and related  costs of
controls.  Generally,  controls  that are  relevant  to an audit  pertain to the
entity's objective of preparing financial  statements for external purposes that
are fairly presented in conformity with accounting principles generally accepted
in the United States.  Those controls include the safeguarding of assets against
unauthorized acquisition, use or disposition.

Because of inherent  limitations in internal  control,  error or fraud may occur
and not be detected.  Also,  projection of any evaluation of internal control to
future  periods  is  subject to the risk that  controls  may  become  inadequate
because of changes in conditions or that the  effectiveness  of their design and
operation may deteriorate.

Our consideration of internal control would not necessarily disclose all matters
in  internal   control  that  might  be  material   weaknesses  under  standards
established  by the  American  Institute  of  Certified  Public  Accountants.  A
material weakness is a condition in which the design or operation of one or more
of the internal control components does not reduce to a relatively low level the
risk  that  misstatements  caused  by error or fraud in  amounts  that  would be
material in relation to the financial statements being audited may occur and not
be  detected  within a timely  period  by  employees  in the  normal  course  of
performing  their assigned  functions.  However,  we noted no matters  involving
internal  control  and  its  operation,  including  controls  over  safeguarding
securities,  that we consider to be material  weaknesses  as defined above as of
December 31, 1999.

This  report is  intended  solely  for the  information  and use of the Board of
Directors  of  the  Portfolios,  management  and  the  Securities  and  Exchange
Commission and is not intended to be and should not be used by anyone other than
these specified parties.

PricewaterhouseCoopers LLP

Milwaukee, Wisconsin
February 2, 2000


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