Exhibit 11 ITT EDUCATIONAL SERVICES, INC. COMPUTATION OF PRIMARY AND FULLY DILUTED EARNINGS PER SHARE (In thousands, except per share data) Three Months Ended March 31, ---------------------------- 1997 1996 ------- ------- Net income $ 6,202 $ 4,835 ======= ======= Shares: Weighted average number of shares of common stock outstanding 27,000 27,000 Shares assumed issued (less shares assumed purchased for treasury) on stock options 182 104 ------- ------- Outstanding shares for primary earnings per share calculation 27,182 27,104 ======= ======= Earnings per common share: $ 0.23 $ 0.18 ======= =======