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Peer reviewedRakow, Ernest A.; And Others – Journal of Educational Measurement, 1978
This study estimated a component of within-school variance which has been overlooked in policy research studies and program evaluations performed to date: the effect on pupil performance of different teachers within a single school or program. Results indicated that teacher effects accounted for 30 to 40 percent of within-school variance. (Author/…
Descriptors: Academic Achievement, Analysis of Variance, Program Evaluation, Research Design
Peer reviewedMarascuilo, Leonard A. – Journal of Experimental Education, 1979
The utility of the biomedical model of adjusted statistics is demonstrated. The model is recommended for use by educational researchers to randomize subjects for a more accurate estimate of school programs' success or failure when compared across classrooms or other units. (Author/MH)
Descriptors: Academic Achievement, Analysis of Variance, Comparative Analysis, Criterion Referenced Tests
