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Guskey, Thomas R.; Yoon, Kwang Suk – Phi Delta Kappan, 2009
Scholars from the American Institutes for Research analyzed findings from over 1,300 studies that potentially address the effect of professional development on student learning outcomes. The project was sponsored by the Regional Education Laboratory-Southwest (RELSW) and funded by the Institute of Education Sciences of the U.S. Department of…
Descriptors: Achievement Gains, Academic Achievement, Professional Development, Elementary School Students