Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in the following Registration Statements of The Advisory Board Company and subsidiaries of our reports dated May 30, 2008, with respect to the consolidated financial statements and schedule of The Advisory Board Company and subsidiaries and the effectiveness of internal control over financial reporting of The Advisory Board Company, included in this Annual Report (Form 10-K) for the year ended March 31, 2008.
| Registration Statement Number | Description | |||
| 333-84422 | S-8 | |||
| 333-104584 | S-3 | |||
| 333-112712 | S-3 | |||
| 333-122850 | S-3 | |||
| 333-140757 | S-8 | |||
/s/ Ernst & Young LLP
Baltimore, Maryland
May 30, 2008
May 30, 2008