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Hill, Richard; And Others – Studies in Educational Evaluation, 1977
This review of a previous article (TM 503 836), concludes that: (1) the evaluation methodology was straightforward; (2) simpler data analysis would have yielded the same conclusions; and (3) exclusion of many experimental schools from data analysis and use of post hoc matching and covariance produced misleading results. (CP)
Descriptors: Bias, Data Analysis, Evaluation Methods, Primary Education