Investigation of EBLP to Stabilize School Test Score Metrics in Colorado
Link to Resource:ÌýInvestigation of EBLP to Stabilize School Test Score Metrics in Colorado
´¡³Ü³Ù³ó´Ç°ù²õ:ÌýBenjamin R. Shear, Erik Whitfield, Daniel Mangan
Citation:Ìý
Shear, B. R., Whitfield, E. W., & Mangan, D. (2026). Investigation of EBLP to stabilize school test score metrics in Colorado. Boulder, CO: The Center for Assessment, Design, Research and Evaluation (CADRE), University of Colorado Boulder.
Abstract:
This report examines whether a statistical method called Empirical Best Linear Prediction (EBLP) can reduce the year-to-year volatility of Colorado school test score metrics used for school accountability. ÌýUsing three years of Colorado state test score data, the results demonstrate that EBLP produces more accurate and more stable results than standard single-year measures, with the largest improvements for the smallest schools. However, the use of EBLP measures in place of single-year measures did not increase stability of School Performance Framework Growth Ratings. The report discusses potential explanations for these findings and considerations relevant to the use of statistical stabilization methods such as EBLP when using school test score metrics for accountability.