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School Starting Age and Cognitive Development

Elizabeth Dhuey (), David Figlio (), Krzysztof Karbownik () and Jeffrey Roth

No 23660, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: We present evidence of a positive relationship between school starting age and children’s cognitive development from age 6 to 15 using a regression discontinuity design and large-scale population-level birth and school data from the state of Florida. We estimate effects of being relatively old for grade (being born in September versus August) that are remarkably stable – always just around 0.2 SD difference in test scores – across a wide range of heterogeneous groups, based on maternal education, poverty at birth, race/ethnicity, birth weight, gestational age, and school quality. While the September-August difference in kindergarten readiness is dramatically different by subgroup, by the time students take their first exams, the heterogeneity in estimated effects effectively disappears. We document substantial variation in compensatory behaviors targeted towards young for grade children. While the more affluent families tend to redshirt their children, young for grade children from less affluent families are more likely to be retained in grades prior to testing. School district practices regarding retention and redshirting are correlated with improved outcomes for the groups less likely to use those remediation approaches (i.e., retention in the case of more-affluent families and redshirting in the case of less-affluent families.) We also study college and juvenile detention outcomes using administrative data from a large Florida school district, and show that being an older age at school entry increases children’s college attainment and reduces the likelihood of being incarcerated for juvenile crime.

JEL-codes: I20 (search for similar items in EconPapers)
New Economics Papers: this item is included in nep-dem, nep-edu, nep-neu and nep-ure
Date: 2017-08
Note: CH ED LS
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Published as Elizabeth Dhuey & David Figlio & Krzysztof Karbownik & Jeffrey Roth, 2019. "School Starting Age and Cognitive Development," Journal of Policy Analysis and Management, vol 38(3), pages 538-578.

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