Exhibit 11 ITT EDUCATIONAL SERVICES, INC. COMPUTATION OF PRIMARY AND FULLY DILUTED EARNINGS PER SHARE (In thousands, except per share data) Three Months Ended June 30, Six Months Ended June 30, ---------------------------- -------------------------- 1997 1996 1997 1996 ---- ---- ---- ---- Net income $ 805 $ 314 $ 7,007 $ 5,149 ======= ======= ======= ======= Shares: Weighted average number of shares of common stock outstanding 27,000 27,000 27,000 27,000 Shares assumed issued (less shares assumed purchased for treasury) on stock options 171 159 177 132 ------- ------- ------- ------- Outstanding shares for primary earnings per share calculation 27,171 27,159 27,177 27,132 ======= ======= ====== ====== Earnings per common share: $ 0.03 $ 0.01 $ 0.26 $ 0.19 ======= ======= ======= =======