Report of Independent Accountants
To the Board of Trustees of
SEI Institutional Investments Trust:
In planning and performing our audit of the financial statements of
SEI Institutional Investments Trust (the "Trust"), for the year ended
May 31, 2000, 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 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 entity'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
fraud may occur and 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 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 for safeguarding securities
that we consider to be material weaknesses as defined above as
of May 31, 2000.
This report is intended solely for the information and use of
management, the Board of Trustees of the Trust and the Securities
and Exchange Commission.
PricewaterhouseCoopers LLP
Philadelphia, Pennsylvania
July 18, 2000
