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Correnti, Richard – Educational Evaluation and Policy Analysis, 2007
The author examined the effects of professional development (PD) on literacy instruction using 75,689 lessons from 1,945 classrooms in 112 schools participating in the Study of Instructional Improvement. Stratifying over 94 pretreatment covariates, including prior instruction, the results revealed the importance of PD as a lever for changing…
Descriptors: Instructional Improvement, Literacy, Professional Development, Portfolios (Background Materials)