EXHIBIT 99 Joint Filer Information Designated Filer: BLUM CAPITAL PARTNERS, L.P. Date of Earliest Transaction Required to be Reported: March 30, 2012 Issuer & Symbol: ITT Educational Services, Inc. (ESI) Address of each Reporting Person for this Form 4: 909 Montgomery Street, Suite 400, San Francisco, CA 94133 Relationship to Issuer of each Reporting Person: 10% Owner Signatures After reasonable inquiry and to the best of our knowledge and belief, the undersigned certify that the information set forth in this statement is true, complete and correct. April 3, 2012 RICHARD C. BLUM & ASSOCIATES, INC. BLUM CAPITAL PARTNERS, L.P. By: Richard C. Blum & Associates, Inc. its General Partner By: /s/ Gwen G. Reinke By: /s/ Gwen G. Reinke ------------------------------ ------------------------------ Gwen G. Reinke Gwen G. Reinke General Counsel and Chief General Counsel and Chief Compliance Officer Compliance Officer BLUM STRATEGIC GP III, L.L.C. BLUM STRATEGIC GP III, L.P. By: Blum Strategic GP III, L.L.C. its General Partner By: /s/ Gwen G. Reinke By: /s/ Gwen G. Reinke ------------------------------ ------------------------------ Gwen G. Reinke Gwen G. Reinke Member Member BLUM STRATEGIC GP IV, L.L.C. BLUM STRATEGIC GP IV, L.P. By: Blum Strategic GP IV, L.L.C. its General Partner By: /s/ Gwen G. Reinke By: /s/ Gwen G. Reinke ------------------------------ ------------------------------ Gwen G. Reinke Gwen G. Reinke Member Member