<PAGE> PAGE 1
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<PAGE> PAGE 2
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<PAGE> PAGE 4
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<PAGE> PAGE 6
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SIGNATURE JEFFREY A. COHEN
TITLE CONTROLLER
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</TABLE>
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</TABLE>
Board of Trustees
SEI Index Funds:
In planning and performing our audit of the financial statements of SEI
Index Funds for the year ended March 31, 1996, we considered its internal
control structure, including procedures 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 the internal control structure.
The management of SEI Index Funds is responsible for establishing and
maintaining an internal control structure. In fulfilling this responsibility,
estimates and judgments by management are required to assess the expected
benefits and related costs of internal control structure policies and
procedures. Two of the objectives of an internal control structure are to
provide management with reasonable, but not absolute, assurance that assets
are safeguarded against loss from unauthorized use or disposition and that
transactions are executed in accordance with management's authorization and
recorded properly to permit preparation of financial statements in
conformity with generally accepted accounting principles.
Because of inherent limitations in any internal control structure, errors
or irregularities may occur and not be detected. Also, projection of any
evaluation of the structure to future periods is subject to the risk that it
may become inadequate because of changes in conditions or that the
effectiveness of the design and operation may deteriorate.
Our consideration of the internal control structure would not necessarily
disclose all matters in the internal control structure 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 the specific internal control structure elements
does not reduce to a relatively low level the risk that errors or irregularities
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 the internal control structure,
including procedures for safeguarding securities, that we consider to be
material weaknesses as defined above as of
March 31, 1996.
This report is intended solely for the information and use of management,
the Board of Trustees and the Securities and Exchange Commission and
should not be used for any other purpose.
/s/ Arthur Andersen LLP
Arthur Andersen LLP
Philadelphia, PA
May 10, 1996
