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The majority of research on the efficacy of ClassWide Peer Tutoring (CWPT) is based on research with urban elementary students (), with much less research in middle schools. This study investigated CWPT with 975 middle school students in 52 classrooms, grades 6 through 8, over a three-year period. A mixed design combining features of both group (interrupted time-series) and single-subject reversal designs was used to evaluate the effects of traditional teacher-led instruction vs. CWPT. Results favored CWPT with effect sizes, based on weekly quizzes, indicating moderate to large effects overall (M = 1.11) but with some range across classrooms and content. Implications for future research and practice are discussed.
Kamps et al. (Tue,) studied this question.