Purpose: Decades of scholarship have drawn on Weiss's four categories of research use (Weiss, 1980; 2005; Weiss & Bucuvalas, 1980) -- instrumental use, symbolic use, conceptual use, and imposed use -- to examine how research use unfolds in school districts (e.g., Amara et al., 2004; Penuel et al., 2017). In this paper, we theorize a new form…

Introduction: The What Works Clearinghouse (WWC) reviews rigorous research on educational interventions with a goal of identifying "what works" and making that information accessible to educators and policymakers. The WWC has historically prioritized internal validity over external validity in rating the quality of research. One critique…

Background: In today's era of evidence-based policymaking, policymakers face pressure to use research evidence to inform their decisions. This is particularly salient in the United States, where federal law mandates that education leaders implement policies, programs, and strategies that have been demonstrated to improve student outcomes. Despite…

Beginning with the "No Child Left Behind Act" of 2001 (NCLB) and reinforced by the "Education Sciences Reform Act" of 2002 (ESRA), the federal government established explicit expectations for the role of research in informing decisions about education programs, policies, and practice, and it also specified new expectations for…

Bayesian statistical methods have become more feasible to implement with advances in computing but are not commonly used in educational research. In contrast to frequentist approaches that take hypotheses (and the associated parameters) as fixed, Bayesian methods take data as fixed and hypotheses as random. This difference means that Bayesian…

Over the past 2 decades, the number of after-school programs (ASP) and the number of students attending ASPs has markedly increased. Although several reviews and meta-analyses have examined the outcomes of ASPs, ASP intervention study reviews have not specifically examined intervention fidelity. Establishing intervention fidelity is critically…

In an effort to bring more knowledge about "what works" to educational practitioners, the Institute of Education Sciences (IES) has made significant investments in developing and disseminating focused, rigorous research projects in order to increase the supply of and demand for this research in educational decision making. These efforts…