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Direct linkKingston, Neal; Nash, Brooke – Educational Measurement: Issues and Practice, 2011
An effect size of about 0.70 (or 0.40-0.70) is often claimed for the efficacy of formative assessment, but is not supported by the existing research base. More than 300 studies that appeared to address the efficacy of formative assessment in grades K-12 were reviewed. Many of the studies had severely flawed research designs yielding…
Descriptors: Elementary Secondary Education, Formative Evaluation, Program Effectiveness, Effect Size
