Program

The effect of class size on academic achievement and the psychosocial adaptation of students

[Speaker] Ito, Hiroyuki:1
1:Hamamatsu University School of Medicine (Japan)

The effects of class size differences on academic achievement and the psychosocial adaptation of students is a widely debated topic. Though there is some agreement that smaller classes have positive effects on academic achievement (Blatchford et al., 2003), its effect on psychosocial adaptation is controversial owing to the lack of empirical knowledge. From the methodological perspective, since class size is not an individual-level variable but a group-level variable, several tens of times larger sample is required for testing the effect of class size with sufficient statistical power. To this end, I analyzed seven-wave longitudinal data from over ten thousand elementary and junior-high school students in Japan and found that class size was related to not only academic performance but also psychosocial adaptation (peer relation, teacher-student relationship, and social support). I will report the results of the analysis and discuss a wide range of variables that class size influence.
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