School Entry, Educational Attainment and Quarter of Birth: A Cautionary Tale of LATE

Kevin Lang and Rashmi Barua

No WP2010-019, Boston University - Department of Economics - Working Papers Series from Boston University - Department of Economics

Abstract: Partly in response to increased testing and accountability, states and districts have been raising the minimum school entry age, but existing studies show mixed results regarding the effects of entry age. These studies may be severely biased because they violate the monotonicity assumption needed for LATE. We propose an instrument not subject to this bias and show no effect on the educational attainment of children born in the fourth quarter of moving from a December 31 to an earlier cutoff. We then estimate a model that reconciles the di¤erent IV estimates including ours. We find that one standard instrument is badly biased but that the other diverges from ours because it estimates a di¤erent LATE. We also find that an early entry age cutoff that is applied loosely (as in the 1950s) raises educational attainment but one that is strictly enforced lowers it.

Pages: 33 pages
Date: 2010-01
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Citations: View citations in EconPapers (10)

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Working Paper: School Entry, Educational Attainment and Quarter of Birth: A Cautionary Tale of LATE (2009)
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