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The Evolution of the Black-White Test Score Gap in Grades K-3: The Fragility of Results

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  • Timothy N. Bond
  • Kevin Lang

Abstract

Although both economists and psychometricians typically treat them as interval scales, test scores are reported using ordinal scales. Using the Early Childhood Longitudinal Study and the Children of the National Longitudinal Survey, we examine the effect of order-preserving scale transformations on the evolution of the black-white reading test score gap from kindergarten entry through third grade. Plausible transformations reverse the growth of the gap in the CNLSY and greatly mitigate it in the ECLS-K during early school years. All growth from entry through first grade and a nontrivial proportion from first to third grade probably reflects scaling decisions.

Suggested Citation

  • Timothy N. Bond & Kevin Lang, 2012. "The Evolution of the Black-White Test Score Gap in Grades K-3: The Fragility of Results," NBER Working Papers 17960, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:17960
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    1. Flavio Cunha & James J. Heckman & Susanne M. Schennach, 2010. "Estimating the Technology of Cognitive and Noncognitive Skill Formation," Econometrica, Econometric Society, vol. 78(3), pages 883-931, May.
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    4. Charles T. Clotfelter & Helen F. Ladd & Jacob L. Vigdor, 2009. "The Academic Achievement Gap in Grades 3 to 8," The Review of Economics and Statistics, MIT Press, vol. 91(2), pages 398-419, May.
    5. Kevin Lang, 2010. "Measurement Matters: Perspectives on Education Policy from an Economist and School Board Member," Journal of Economic Perspectives, American Economic Association, vol. 24(3), pages 167-182, Summer.
    6. Flavio Cunha & James J. Heckman, 2008. "Formulating, Identifying and Estimating the Technology of Cognitive and Noncognitive Skill Formation," Journal of Human Resources, University of Wisconsin Press, vol. 43(4).
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    More about this item

    JEL classification:

    • C18 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Methodolical Issues: General
    • I24 - Health, Education, and Welfare - - Education - - - Education and Inequality
    • J15 - Labor and Demographic Economics - - Demographic Economics - - - Economics of Minorities, Races, Indigenous Peoples, and Immigrants; Non-labor Discrimination

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