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by barry-cotter 3881 days ago
Preschool appears to have little if any benefit as measured by school achievement or teacher assessments of school readiness by first grade teacher

http://peabody.vanderbilt.edu/research/pri/VPKthrough3rd_fin...

A Randomized Control Trial of a Statewide Voluntary Prekindergarten Program on Children’s Skills and Behaviors through Third Grade

>The third question we addressed involved the sustainability of effects on achievement and behavior beyond kindergarten entry. Children in both groups were followed and reassessed in the spring every year with over 90% of the initial sample located tested on each wave. By the end of kindergarten, the control children had caught up to the TN‐VPK [preschool] children and there were no longer significant differences between them on any achievement measures. The same result was obtained at the end of first grade using both composite achievement measures. In second grade, however, the groups began to diverge with the TN‐VPK children scoring lower than the control children on most of the measures. The differences were significant on both achievement composite measures and on the math subtests.

>First grade teachers rated the TN‐VPK children as less well prepared for school, having poorer work skills in the classrooms, and feeling more negative about school. It is notable that these ratings preceded the downward achievement trend we found for VPK children in second and third grade.

Further commentary and discussion

http://www.arnoldkling.com/blog/null-hypothesis-for-pre-k-ed...

http://marginalrevolution.com/marginalrevolution/2015/10/new...