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REPORT OF INDEPENDENT ACCOUNTANTS
To the Board of Trustees of
The SEI Institutional Investments Trust:
In planning and performing our audit of the financial statements and
financial highlights of the SEI Institutional Investments Trust consisting of
the Large Cap Fund, Small Cap Fund, Core Fixed Income Fund and the
International Equity Fund (collectively, the "Trust") for the year ended
May 31, 1998, we considered its internal control, including procedures
for safeguarding securities, in order to determine our auditing procedures for
the purpose of expressing our opinion on the financial statements and
financial highlights and to comply with the requirements of Form N-SAR,
not to provide assurance on internal control.
The management of the Trust 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 Trust's objective of preparing financial statements for external
purposes that are fairly presented in conformity with generally accepted
accounting principles. Those controls include the safeguarding of assets
against unauthorized acquisition, use, or disposition.
Because of inherent limitations in internal control, errors or irregularities
may occur and may not be detected. Also, projection of any evaluation of
internal control 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 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 any specific internal control component 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 and financial
highlights 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,
including procedures for safeguarding securities that we consider to be
material weaknesses, as defined above, as of May 31, 1998.
This report is intended solely for the information and use of management
and Board of Trustees of the SEI Institutional Investments Trust and the
Securities and Exchange Commission.
PricewaterhouseCoopers LLP
2400 Eleven Penn Center
Philadelphia, Pennsylvania
July 16, 1998
