Exhibit (d)(13)

                 AMENDMENT TO INVESTMENT SUB-ADVISORY AGREEMENT

     Amendment dated as of July 1, 2003 to the Investment Sub-Advisory Agreement
between SEI Investments Management Corporation (the "Adviser") and Standish
Mellon Asset Management Company LLC (the "Sub-Adviser") with respect to the SEI
Tax Exempt Trust's Intermediate-Term Municipal, New York Municipal Bond, and
Massachusetts Municipal Bond Portfolios (each a "Portfolio," and collectively
the "Portfolios").

                                   WITNESSETH:

     WHEREAS, Adviser and Sub-Adviser have entered into an Investment
Sub-Advisory Agreement (the "Agreement") dated July 31, 2001, pursuant to which
the Sub-Adviser renders investment sub-advisory services to each Portfolio;

     WHEREAS, Section 1(h) of the Agreement provides that (i) the Sub-Adviser
shall review all proxy solicitation materials and be responsible for voting and
handling all proxies in relation to the securities held as Assets in a
Portfolio; and (ii) the Adviser shall instruct the custodian and other parties
providing services to a Portfolio to promptly forward misdirected proxies to the
Sub-Adviser;

     WHEREAS, the Adviser and the Sub-Adviser desire to amend Section 1(h) of
the Agreement for the purpose of revising the duties and responsibilities of the
Adviser and Sub-Adviser with regard to reviewing proxy solicitation materials
and responsibility for voting and handling proxies in relation to the securities
held as Assets in a Portfolio; and

     WHEREAS, the Adviser and Sub-Adviser also desire to amend certain
provisions of the Agreement to reflect amendments by the U.S. Securities and
Exchange Commission to Rules 10f-3, 12d3-1 and 17e-1 and adoption of new Rule
17a-10 under the Investment Company Act of 1940, as amended.

     NOW THEREFORE, in consideration of the foregoing and the mutual covenants
herein contained, the parties hereby agree as follows:

     Section 1(h) of the Agreement is amended and restated as follows:

     (h)  (i)  Except under the circumstances set forth in subsection (ii), the
               Sub-Adviser shall not be responsible for reviewing proxy
               solicitation materials or voting and handling proxies in relation
               to the securities held as Assets in a Portfolio. The Sub-Adviser
               shall instruct the custodian and other parties providing services
               to a Portfolio to promptly forward misdirected proxies to the
               Adviser.

          (ii) The Sub-Adviser hereby agrees that upon 60 days' written notice
               from the Adviser, the Sub-Adviser shall assume responsibility for
               reviewing proxy solicitation materials and voting proxies in
               relation to the securities held as Assets in a Portfolio in
               accordance with the Sub-Adviser's proxy voting policies and
               procedures, as



               amended. As of the time as the Sub-Adviser shall assume such
               responsibilities with respect to proxies under this sub-section
               (ii), the Adviser shall instruct the custodian and other parties
               providing services to a Portfolio to promptly forward misdirected
               proxies to the Sub-Adviser.

     The following paragraph is added to the Agreement as Section 1(i):

     (i)  In performance of its duties and obligations under this Agreement, the
          Sub-Adviser shall not consult with any other sub-adviser to a
          Portfolio or a sub-adviser to a portfolio that is under common control
          with a Portfolio concerning the Assets, except as permitted by the
          policies and procedures of a Portfolio. The Sub-Adviser shall not
          provide investment advice to any assets of a Portfolio other than the
          Assets.

     Except as expressly superseded or modified by this Amendment, the terms and
provisions of the Agreement shall continue to apply with full force and effect.

     IN WITNESS WHEREOF, the parties have caused this Amendment to be executed
by their officers designated below as of the day and year first written above.

SEI INVESTMENTS MANAGEMENT CORPORATION    STANDISH MELLON ASSET MANAGEMENT
                                          COMPANY LLC

By:    /s/ Todd Cipperman                 By:    /s/ Thomas P. Sorbo
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Name:  Todd Cipperman                     Name:  Thomas P. Sorbo
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Title: Senior Vice President              Title: Chief Operating Officer
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