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Johnson, Angela; Kuhfeld, Megan – Journal of Research on Educational Effectiveness, 2021
The belief that additional time allows children to become more ready for school has affected public policy and individual practices. Prior studies estimated either associations between school entry age and academic growth or causal effects on achievement measured at one or two points. This article contributes novel causal evidence for the impacts…
Descriptors: School Entrance Age, Academic Achievement, Kindergarten, Elementary School Students