GRC International, Inc. Statement of Computation of Earnings Per Share (in thousands, except for per share amounts) QTR ENDING YTD ENDING 12/31/99 12/31/98 12/31/99 12/31/98 ------------------------ ---------------------- BASIC Weighted Average Number of Shares of Common Stock Outstanding 12,377 10,222 11,668 10,218 Income from Continuing Operations 1,644 3,100 4,002 6,130 Income from Discontinued Operations - 140 - 194 ------------------------ ---------------------- Net Income 1,644 3,240 4,002 6,324 ======================== ====================== Per Share Amount: Income from Continuing Operations 0.13 0.31 0.34 0.60 Income from Discontinued Operations - 0.01 - 0.02 ------------------------ ---------------------- Net Income 0.13 0.32 0.34 0.62 ======================== ====================== DILUTED Weighted Average Number of Shares of Common Stock Outstanding 12,377 10,222 11,668 10,218 Net Effect of Dilutive Stock Options Based on the Treasury Stock Method Using Average Market Price 598 189 513 220 Net Effect of Convertible Debenture Based on the if Converted Method (ONLY IF DILUTIVE) - - - - ------------------------ ---------------------- Weighted Average Shares Outstanding 12,974 10,411 12,181 10,438 ======================== ====================== Income from Continuing Operations 1,644 3,100 4,002 6,130 Interest and Amortization on Convertible Debenture (ONLY IF DILUTIVE) - - - - Adjusted Income from Continuing Operations 1,644 3,100 4,002 6,130 Income from Discontinuing Operations - 140 - 194 ------------------------ ---------------------- Adjusted Net Income 1,644 3,240 4,002 6,324 ======================== ====================== Per Share Amount: Adjusted Income from Continuing Operations 0.13 0.30 0.33 0.59 Income from Discontinuing Operations - 0.01 - 0.02 ------------------------ ---------------------- Adjusted Net Income 0.13 0.31 0.33 0.61 ======================== ======================