EXHIBIT 11 IPI, INC. AND SUBSIDIARY STATEMENT REGARDING COMPUTATION OF EARNINGS PER SHARE (In Thousands, Except Per Share Amounts) Three Months Ended February 28, ---------------------- 1998 1997 ---------------------- Net Income $ 388 $ 314 ======== ======== Weighted average number of issued shares outstanding 4,734 4,734 ======== ======== 4,734 4,734 Shares used in computation of basic earnings per common stock Dilutive effect of outstanding stock options and stock warrants after application of treasury stock method 8 0 -------- -------- Common and common equivalent shares outstanding-diluted 4,742 4,734 ======== ======== Basic earnings per common share $ .08 $ .07 ======== ======== Diluted earnings per common share $ .08 $ .07 ======== ========