Thursday, March 22, 2012

How teacher turnover harms student achievement


This study estimates the effects of teacher turnover on over 850,000 New York City 4th and 5th grade student observations over eight years. The results indicate that students in grade-levels with higher turnover score lower in both ELA and math and that this effect is particularly strong in schools with more low-performing and black students. Moreover, the results suggest that there is a disruptive effect of turnover beyond changing the distribution in teacher quality.

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