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Peer reviewedGoldstein, Harvey; Blatchford, Peter – British Educational Research Journal, 1998
Reviews research into class size effects from a methodological viewpoint, concentrating on various strengths and weaknesses of randomized controlled trials (RCT) and observational studies. Discusses population definitions, causation, and generally sets out criteria for valid inferences from such studies. Illustrates with new findings from data in…
Descriptors: Academic Achievement, Class Size, Control Groups, Data Collection
