The Advisory Board Company Schedules Second Quarter Conference Call for November 2, 2009

WASHINGTON, — The Advisory Board Company (Nasdaq: ABCO) announced today that it will hold a conference call hosted by Robert W. Musslewhite, Chief Executive Officer and Michael T. Kirshbaum, Chief Financial Officer, to discuss the Company’s financial results for the quarter ended September 30, 2009. The call will be held on Monday, November 2, 2009, at 6:00 p.m., Eastern Time. The Company plans to release its second quarter financial results after the market closes on Monday, November 2, 2009.

The conference call will be available via live webcast in the Investor Relations section of the Company’s website at www.advisoryboardcompany.com/IR. To participate by telephone, the dial-in number is 866.271.5140 and the access code is 12075966. Call participants are advised to dial in at least five minutes prior to the call to register. The webcast will be archived for seven days: from 9:00 p.m., Monday, November 2, 2009, until 9:00 p.m., Eastern Time, Monday, November 9, 2009. – The Advisory Board Company