STRADLEY, RONON, STEVENS & YOUNG, LLP
2600 One Commerce Square
Philadelphia, PA 19103
(215) 564-8000
1933 Act Rule 497(j)
1933 Act File No. 002-73948
1940 Act File No. 811-03258
Direct Dial: (215) 564-8077
April 4, 2000
FILED via EDGAR
U.S. Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C. 20549
Attn: Filing Desk
Re: DFA Investment Dimensions Group Inc.
File Nos. 002-73948 and 811-03258
Rule 497(j) Filing
Ladies and Gentlemen:
Pursuant to Rule 497(j) under the Securities Act of 1933, as
amended, this letter serves as certification that the form of
Prospectuses and Statements of Additional Information that would
have been filed under paragraph (c) of Rule 497 would not have
differed from those contained in Post-Effective Amendment Nos.
56/57 to the Registration Statement of DFA Investment Dimensions
Group Inc. which was filed with the Securities and Exchange
Commission electronically on March 22, 2000.
Please direct any questions or comments relating to this
certification to me or, in my absence, to Mark A. Sheehan,
Esquire at (215) 564-8027.
Very truly yours,
/s/ Lisa M. King
Lisa M. King
cc: Catherine L. Newell, Esquire
Ms. Jessica Y. Gray
