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Boyd, Donald; Lankford, Hamilton; Loeb, Susanna; Wyckoff, James – Journal of Educational and Behavioral Statistics, 2013
Test-based accountability as well as value-added asessments and much experimental and quasi-experimental research in education rely on achievement tests to measure student skills and knowledge. Yet, we know little regarding fundamental properties of these tests, an important example being the extent of measurement error and its implications for…
Descriptors: Accountability, Educational Research, Educational Testing, Error of Measurement
Boyd, Don; Lankford, Hamp; Loeb, Susanna; Rockoff, Jonah; Wyckoff, Jim – National Center for Analysis of Longitudinal Data in Education Research, 2008
Arguably the most important educational resource is teachers. Teachers and teaching quality are a central feature of the No Child Left Behind Act of 2001 (NCLB) which requires a "highly qualified teacher" in every core academic classroom. Many states and large districts also have policies in place to attract qualified teachers to…
Descriptors: Teacher Effectiveness, Federal Legislation, Teacher Qualifications, Academic Achievement