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    Effect of Summer Learning Loss on Aggregate Estimates of Student Growth

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    Issue Date
    2015-05-31
    Author
    Gillmor, Susan Connolly
    Publisher
    University of Kansas
    Format
    69 pages
    Type
    Dissertation
    Degree Level
    Ed.D.
    Discipline
    Psychology & Research in Education
    Rights
    Copyright held by the author.
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    Abstract
    Recent reforms in federal educational policy now mandate the use of student assessment data to evaluate teachers and principals. Despite the widespread adoption of Student Growth Percentiles (SGPs) and other models to link student achievement growth to teacher and school effectiveness, little research exists evaluating the validity of the resulting effectiveness estimates for use in high-stakes personnel evaluation systems. This paucity in the literature is especially problematic given that significant correlations between effectiveness estimates and student characteristics, specifically poverty, have been well documented. This dissertation explores summer learning loss as one potential source of bias in annual estimates of student growth for teacher and school evaluation. The guiding hypothesis is that economically moderated summer learning patterns are contributing to systematic error variance in teacher and school effectiveness estimates when calculated based on annual test scores. Datasets from two, nationally distributed commercial interim assessment programs are analyzed separately and their results discussed. Results reveal that the extent of summer learning loss, and by extension, its effect on the validity SGPs for evaluation purposes varies by subject, grade level, and testing program. Statistically significant correlations between mean Student Growth Percentiles and summer learning loss range from r = -.310 to r = -.662. Implications for fairness and education policy are discussed.
    URI
    http://hdl.handle.net/1808/19507
    Collections
    • Dissertations [4475]
    • Education Dissertations and Theses [1065]

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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