I producted a CAI courseware [Introduction of Computer Information Processing] for biginers on information processing. CAI courseware is hard to estimate by the objective testing methords. In this Papper, Educational efficiency of this CAI-courseware, which is examined in school lessons, are analysed by meta-analysis, which is produced by Glass and is proposed to estimate CAI lesson-grade by the objective view points. The conclusion is that CAI-courseware [Introduction of Computer Information Processing] is, in effective-used case, to some extent effective in school computer lessons.