EXHIBIT 11 IPI, INC. AND SUBSIDIARIES STATEMENT REGARDING COMPUTATION OF EARNINGS PER SHARE (In Thousands, Except Per Share Amounts) Three Months Ended Nine Months Ended August 31, August 31, ----------------------------------------- 2001 2000 2001 2000 ----------------------------------------- Net Income $5,359 $ 151 $9,618 $ 872 ====== ====== ====== ====== Weighted average number of issued shares outstanding 4,859 4,859 4,859 4,843 ====== ====== ====== ====== Shares used in computation of basic earnings per common stock 4,859 4,859 4,859 4,843 ====== ====== ====== ====== Dilutive effect of outstanding stock options and stock warrants after application of treasury stock method 0 0 0 0 ------ ------ ------ ------ Common and common equivalent shares outstanding-diluted 4,859 4,859 4,859 4,843 ====== ====== ====== ====== Basic and diluted earnings per common share $ 1.10 $ .03 $ 1.98 $ .18 ====== ====== ====== ====== 14