The purpose of this research was to examine the possibility of postfeedback interval, and the method of management that might affect the children's performance in a school learning situation. In experiment I, using a booklet, 199 fourth-grade students participating, five conditions were arranged. The results showed that in Cond. I & II which were acconding to the teacher's paced learning, the students performed better than in Con. III, IV (subject's paced) & Control. In experiment II, 82 subjects participated in this research over a four-day period. Everyday, after the teaching session, each was given a short test. Subjects in the teaching type A were able to correct and elaborate their responses in PFI established before the teaching lesson, while in teaching type B no interval was given. The results indicated superiority of teaching in type A over type B.