PIONEER SERIES TRUST II AMENDMENT TO THE AGREEMENT AND DECLARATION OF TRUST OF PIONEER SERIES TRUST II The undersigned, being at least a majority of the Trustees of Pioneer Series Trust II, a Delaware statutory trust (the "Trust"), do hereby amend the Agreement and Declaration of Trust, dated September 2, 2003, as amended (the "Declaration"), as follows, such amendment to be effective on the date hereof: Pursuant to Article IX, Section 8 of the Declaration, the Trustees hereby establish additional series of the Trust, which shall be designated as set forth on ANNEX A, and each series shall have six (6) Classes of Shares which shall be designated Class A, Class B, Class C, Class R, Class Y and Investor Class Shares. IN WITNESS WHEREOF, the undersigned being all the Trustees of the Trust have executed this instrument as of this 3rd day of August, 2004. /s/ John F. Cogan, Jr /s/ Osbert M. Hood - ------------------------------------ ------------------------------------ John F. Cogan, Jr Osbert M. Hood /s/ Mary K. Bush /s/ Marguerite A. Piret - ------------------------------------ ------------------------------------ Mary K. Bush Marguerite A. Piret /s/ Richard H. Egdahl, M.D. /s/ Stephen K. West - ------------------------------------ ------------------------------------ Richard H. Egdahl, M.D. Stephen K. West /s/ Margaret B.W. Graham /s/ John Winthrop - ------------------------------------ ------------------------------------ Margaret B.W. Graham John Winthrop The address of each Trustee is: c/o Pioneer Investment Management, Inc 60 State Street, Boston, Massachusetts 02109 ANNEX A ADDITIONAL SERIES OF PIONEER SERIES TRUST II PIONEER CALIFORNIA TAX FREE INCOME FUND PIONEER GROWTH OPPORTUNITIES FUND PIONEER MUNICIPAL BOND FUND PIONEER TAX FREE MONEY MARKET FUND