EXHIBIT 32.1

                         CERTIFICATION OF ANNUAL REPORT

      Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C.
Section 1350, the undersigned officer of Renaissance Learning, Inc. (the
"Company"), hereby certifies that, to THE undersigned's knowledge:

      (1)   the Company's Annual Report on Form 10-K for the year ended December
            31, 2005 (the "Report") fully complies with the requirements of
            Section 13(a) or 15(d), as applicable, of the Securities Exchange
            Act of 1934; and

      (2)   the information contained in the Report fairly presents, in all
            material respects, the financial condition and results of operations
            of the Company.

Dated: February 22, 2006

                                    /s/ Terrance D. Paul
                                    --------------------
                                    Name: Terrance D. Paul
                                    Title: President and Chief Executive Officer

THIS WRITTEN STATEMENT ACCOMPANIES THIS REPORT PURSUANT TO SECTION 906 OF THE
SARBANES-OXLEY ACT OF 2002 AND SHALL NOT BE DEEMED TO BE FILED BY THE COMPANY
FOR PURPOSES OF THE SECURITES EXCHANGE ACT OF 1934.