Exhibit 32.1
THE ADVISORY BOARD COMPANY
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
Each of the undersigned hereby certifies, in his capacity as an officer of The Advisory Board Company (the “Company”), for purposes of 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge:
| (1) | The Quarterly Report on Form 10-Q of the Company for the quarterly period ended June 30, 2015 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and |
| (2) | The information contained in such Quarterly Report on Form 10-Q fairly presents, in all material respects, the financial condition and results of operations of the Company. |
| /s/ Robert W. Musslewhite | |
| Robert W. Musslewhite | |
| Chief Executive Officer | |
| August 7, 2015 | |
| /s/ Michael T. Kirshbaum | |
| Michael T. Kirshbaum | |
| Chief Financial Officer and Treasurer | |
| August 7, 2015 | |