GRC International, Inc. Statement of Computation of Earnings Per Share (in thousands, except for per share amounts) QTR ENDING YTD ENDING 3/31/99 3/31/98 3/31/99 3/31/98 ------------------ ------------------ BASIC Weighted Average Number of Shares of Common Stock Outstanding 10,238 9,803 10,225 9,737 Income (Loss) from Continuing Operations 1,290 3,548 7,420 6,711 Income (Loss) from Discontinued Operations 26 --- 220 758 --------------------- ---------------------- Net Income (Loss) 1,316 3,548 7,640 7,469 ===================== ====================== Per Share Amount: Income (Loss) from Continuing Operations 0.13 0.36 0.73 0.68 Income (Loss) from Discontinued Operations --- --- 0.02 0.08 --------------------- ---------------------- Net Income (Loss) 0.13 0.36 0.75 0.76 ===================== ====================== FULLY DILUTED Weighted Average Number of Shares of Common Stock Outstanding 10,238 9,803 10,225 9,737 Net Effect of Dilutive Stock Options Based on the Treasury Stock Method Using Average Market Price 293 138 244 138 Net Effect of Convertible Debenture Based on the if Converted Method --- 325 --- 385 --------------------- ---------------------- Weighted Average Shares Outstanding 10,531 10,266 10,468 10,260 ===================== ====================== Income (Loss) from Continuing Operations 1,290 3,548 7,420 6,711 Interest and Amortization on Convertible Debenture --- 47 --- 213 Adjusted Income (Loss) from Continuing Operations 1,290 2,595 7,420 6,924 Income (Loss) from Discontinuing Operations --- 26 220 758 --------------------- ---------------------- Adjusted Net Income (Loss) 1,316 3,595 7,640 7,682 ===================== ====================== Per Share Amount: Adjusted Income (Loss) from Continuing Operations 0.12 0.35 0.71 0.68 Income (Loss) from Discontinuing Operations --- --- 0.02 0.07 --------------------- ---------------------- Adjusted Net Income (Loss) 0.12 0.35 0.73 0.75 ===================== ======================