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Download full textLee, Jaekyung; Finn, Jeremy; Liu, Xiaoyan – Online Submission, 2011
Through a synthesis of test publisher norms and national longitudinal datasets, this study provides new national norms of academic growth in K-12 reading and math that can be used to reinterpret conventional effect sizes in time units. We propose d' a time-indexed effect size metric to estimate how long it would take for an "untreated"…
Descriptors: Control Groups, National Norms, Effect Size, Mathematics Education
Peer reviewed
Direct linkRoss, Steven M.; Paek, Jangmil; McKay, Dawn – ERS Spectrum, 2008
A core component of the No Child Left Behind Act (NCLB, 2001) is the provision of free after-school tutoring services, labeled "supplemental educational services" (SES), to eligible students. Importantly, an explicit NCLB requirement makes each state responsible for evaluating individual SES providers with regard to effectiveness in…
Descriptors: Research Design, Evaluators, Eligibility, Federal Legislation
