SEI INSTITUTIONAL INTERNATIONAL TRUST

                         SUPPLEMENT DATED APRIL 8, 2004
    TO THE STATEMENT OF ADDITIONAL INFORMATION ("SAI") DATED JANUARY 31, 2004

THIS SUPPLEMENT PROVIDES NEW AND ADDITIONAL INFORMATION BEYOND THAT CONTAINED IN
THE SAI, AND SHOULD BE READ IN CONJUNCTION WITH THE SAI.

VALUATION OF FOREIGN EQUITY SECURITIES AND SECURITIES THAT TRADE ON NASDAQ

The SAI is hereby amended and supplemented to reflect (i) the International
Equity Fund's and Emerging Markets Equity Fund's use of a third party valuation
vendor and (ii) changes in the valuation of securities that trade on NASDAQ as
described below. Accordingly, the first and second paragraphs under the section
on pages S-40 and S-41 entitled "PURCHASE AND REDEMPTION OF SHARES" are hereby
deleted and replaced with the following:

          The purchase and redemption price of shares is the net asset value of
     each share. Information about the market value of each portfolio security
     may be obtained by the Administrator from independent pricing services.
     The pricing services may use a matrix system to determine valuations of
     equity and fixed income securities. This system considers such factors as
     security prices, yields, maturities, call features, ratings and
     developments relating to specific securities in arriving at valuations. The
     pricing service may also provide market quotations. The procedures used by
     the pricing services and their valuations methodologies are reviewed by the
     officers of the Trust under the general supervision of the Trustees.

          Fund securities listed on a securities exchange for which market
     quotations are available are valued at the last quoted sale price on each
     business day on which the New York Stock Exchange ("NYSE") is open for
     business ("Business Day") or, if there is no such reported sale, at the
     most recently quoted bid price. Securities listed on NASDAQ are valued
     using the NASDAQ Official Closing Price, except that a Fund that holds
     securities included in the S&P 500 Amex Pricing Pilot Program, in which the
     S&P 500 Index is calculated using the Amex Official Closing Price ("AOCP")
     for certain NASDAQ listed securities, may value those securities using the
     AOCP for the duration of the Program. Unlisted securities for which market
     quotations are readily available are valued at the most recently quoted bid
     price. If such prices are not available or are deemed to be unreliable, the
     security will be valued at fair value as determined in good faith by the
     Board of Trustees. The International Equity Fund and Emerging Markets
     Equity Fund utilize a third party fair valuation service provider in
     valuing the Funds' foreign equity securities. The service provider values
     these Funds' securities based on certain factors and methodologies
     (generally based on valuation correlation between the U.S. market and each
     non-U.S. security) in the event of a movement in the U.S. market that
     exceeds certain thresholds established by the Fair Value Pricing Committee.
     If the Adviser or Sub-Adviser, as applicable, believes that the third party
     service provider's valuations are not reliable, these securities may be
     valued by the Fair Value Pricing Committee. Additional information about
     valuing securities at fair value is provided under the sub-section "Fair
     Value Pricing Committee."


               PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE