Though writing plays an important role in academic, social, and economic success, typical writing instruction generally does not reflect evidence-based practices (EBPs). One potential reason for this is limited signposting of EBPs in standards. We analyzed the content of writing standards from a representative sample of states and the Common Core…

Though writing plays an important role in academic, social, and economic success, typical writing instruction generally does not reflect evidence-based practices (EBPs). One potential reason for this is limited signposting of EBPs in standards. We analyzed the content of writing standards from a representative sample of states and the Common Core…

A vertical scale, in principle, provides a common metric across tests with differing difficulties (e.g., spanning multiple grades) so that statements of "absolute" growth can be made. This paper compares 16 states' 2007-2008 effect size growth trends on vertically scaled reading and math assessments across grades 3 to 8. Two patterns…

This report collects the results of all available empirical studies using the best available scientific methods to measure how school vouchers affect academic outcomes for participants, and all available studies on how vouchers affect outcomes in public schools. Contrary to the widespread claim that vouchers do not benefit participants and hurt…

The cost-effectiveness of class size reduction (CSR) was compared with the cost-effectiveness of rapid formative assessment, a promising alternative for raising student achievement. Drawing upon existing meta-analyses of the effects of student-teacher ratio, evaluations of CSR in Tennessee, California, and Wisconsin, and RAND cost estimates, CSR…