Thursday, April 26, 2018

Article co-authored by Susan Dynarski among most read AERA Open articles


An article authored by Professor Susan Dynarski and Katherine Michelmore (Maxwell School of Citizenship and Public Affairs, Syracuse University) was the sixth most accessed AERA Open article of the first quarter of 2018. The article titled “The Gap Within the Gap: Using Longitudinal Data to Understand Income Differences in Educational Outcomes” was among the most read AERA Open articles based on total full text HTML and PDF views from January to March.

Gaps in educational achievement between high- and low-income children are growing. Administrative data sets maintained by states and districts lack information about income but do indicate whether a student is eligible for subsidized school meals. We leverage the longitudinal structure of these data sets to develop a new measure of economic disadvantage. Half of eighth graders in Michigan are eligible for a subsidized meal, but just 14% have been eligible for subsidized meals in every grade since kindergarten. These children score 0.94 standard deviations below those who are never eligible for meal subsidies and 0.23 below those who are occasionally eligible. There is a negative, linear relationship between grades spent in economic disadvantage and eighth-grade test scores. This is not an exposure effect; the relationship is almost identical in third-grade, before children have been exposed to varying years of economic disadvantage. Survey data show that the number of years that a child will spend eligible for subsidized lunch is negatively correlated with her or his current household income. Years eligible for subsidized meals can therefore be used as a reasonable proxy for income. Our proposed measure can be used to estimate heterogeneous effects in program evaluations, to improve value-added calculations, and to better target resources.


Susan Dynarski is Professor, School of Education; Professor of Public Policy, Gerald R. Ford School of Public Policy; Professor, Department of Economics, College of Literature, Science, and the Arts

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