COLUMBIA FUNDS SERIES TRUST I

                       Columbia International Growth Fund
                                  (the "Fund")

                 Supplement to the Prospectuses, each dated March 31, 2008

Effective April 30, 2008, the Fund has changed its benchmark to the MSCI EAFE
Growth Index. Accordingly, the Fund's prospectuses are revised and supplemented
as follows:

1)       The last four sentences of the paragraph under the heading "Average
         Annual Total Return as of December 31, 2007" are revised and replaced
         in their entirety as follows:

         The table compares the returns for each period with those of the MSCI
         EAFE Growth Index, an unmanaged index which is a subset of the MSCI
         EAFE Index and the components of which include securities from Europe,
         Australasia and the Far East. The MSCI EAFE Growth Index generally
         represents approximately 50% of the free float-adjusted market
         capitalization of the MSCI EAFE Index, and consists of those securities
         classified by Morgan Stanley Capital International, Inc. as most
         representing the growth style. Prior to April 30, 2008, the Fund's
         returns were compared to the MSCI ACWI ex-U.S. Index, an unmanaged
         index of global stock market performance comprising 47 countries with
         developed and emerging markets, excluding the United States and the
         MSCI EAFE Index, an unmanaged, free float-adjusted market
         capitalization index that is designed to measure developed market
         equity performance, excluding the U.S. and Canada. The Fund changed its
         benchmark effective April 30, 2008 because the Advisor believes that
         that MSCI EAFE Growth Index more closely aligns with the historical
         growth bias of management and the Fund's name than do the prior
         benchmarks of the Fund. The Fund's average annual returns for the
         one-year, five-year and ten-year periods are shown compared to the MSCI
         EAFE Growth Index, as well as the Fund's previous benchmarks. Unlike
         the Fund, indices are not investments, and do not reflect sales
         charges, fees, brokerage commissions, taxes or other expenses of
         investing.


2)       The following line is added to the table under the heading "Average
         Annual Total Return as of December 31, 2007":



                                                                                                      

                                                                                      1 Year       5 Years     10 Years
MSCI EAFE Growth Index (reflects no deductions for fees, expenses or taxes)           16.45%       19.85%        6.46%




3)       Reference to the MSCI ACWI ex-U.S. Index and MSCI EAFE Index as the
         Fund's benchmarks, in the "FUNDimensions" information table, are
         deleted and replaced with reference to the MSCI EAFE Growth Index.






INT-47/153737-0508                                                 May 15, 2008