Critiques the conclusions of S. Veenman (1995) about multigrade classes and suggests that selection bias and lower-quality instruction should be included as part of the explanation for his findings of no difference. Indicates that multigrade classes have at least a small negative effect on achievement and potentially negative effects on teacher…

D. Mason and R. Burns (1996) have concluded that multigrade classes have a slightly negative effect on students' achievement. However, a reanalysis, based on meta-analytic procedures, of the available studies shows the average weighted effect sizes to be essentially zero or close to zero. Contains 51 references. (SLD)

Reviews research on multiage classroom organization as an option for high-ability students. Studies of cognitive and affective factors have consistently shown positive effect sizes. Discusses conditions under which positive effects are most likely and explores multiage classes as an alternative for high-ability children. (Contains 85 references.)…

This article reviews the best evidence concerning the cognitive and noncognitive effects of multigrade (students of more than one grade taught by one teacher) and multiage (students grouped for expected benefits) classrooms. Studies of noncognitive, cognitive, and achievement effects reveal no adverse effects of learning in such classrooms. (SLD)