The What Works Clearinghouse (WWC) serves as a central and trusted source of scientific evidence for what works in education. The WWC designs its resources to help educators, administrators, families, researchers, and policymakers make evidence-based decisions. In fall 2023, the WWC convened the Small Working Group of Experienced Education…

The What Works Clearinghouse (WWC) identifies existing research on educational interventions, assesses the quality of the research, and summarizes and disseminates the evidence from studies that meet WWC standards. The WWC aims to provide enough information so educators can use the research to make informed decisions in their settings. This…

This protocol guides the What Works Clearinghouse's (WWC) systematic reviews of evidence on interventions to improve the science, technology, engineering, and mathematics (STEM) knowledge and skills of students in preschool (PK) to grade 12 (or ages 3-21). To conduct the systematic review, use this protocol in conjunction with version 4.1 of the…

Large numbers of U.S. students lack proficiency in science, and students from different racial/ethnic and socioeconomic groups show disparities in science achievement. Science knowledge and skills are important for both academic and workplace success, and a variety of interventions have been developed to improve student achievement in science.…

The What Works Clearinghouse (WWC) examines manuscripts (that is, journal articles, working papers, dissertations, or other publications or pieces of written research presented as complete sets of findings) to determine if they are eligible to be included in a specific review effort. The WWC first determines whether the manuscript contains a…

This protocol guides the review of research that informs the What Works Clearinghouse (WWC) intervention reports in the Supportive Learning Environment topic area. The protocol is used in conjunction with the "WWC Procedures and Standards Handbooks (Version 4.0)." This review focuses on interventions designed to promote supportive…

This protocol guides the What Works Clearinghouse's (WWC) systematic reviews of evidence on interventions designed to improve the English language and literacy skills of students in kindergarten to grade 12. To conduct the systematic review, this protocol is used in conjunction with version 4.1 of the WWC Standards and Procedures Handbooks and the…

Many studies of education interventions make claims about impacts on students' outcomes. Some studies have designs that enable readers to make causal inferences about the effects of an intervention but others have designs that do not permit these types of conclusions. To help policymakers, practitioners, and others make sense of study results, the…

At its most effective, advising is a collaborative process between a student and an advisor designed to help the student realize their educational potential. Most postsecondary institutions have historically used advisors to help students select and register for courses, but postsecondary institutions are increasingly asking advisors to play an…

This appendix provides additional characteristics of the studies of "Class-Wide Function-Related Intervention Teams (CW-FIT)" that meet What Works Clearinghouse (WWC) single-case design standards, including six studies that contribute to the findings in the "CW-FIT" intervention report and six studies that do not contribute to…

This review-specific protocol guides the review of research that informs the What Works Clearinghouse (WWC) Charter Schools topic area. The review-specific protocol is used in conjunction with the "WWC Procedures and Standards Handbook (version 3.0)." This review focuses on charter school interventions in the United States with students…

The What Works Clearinghouse (WWC) evaluates research studies that look at the effectiveness of education programs, products, practices, and policies, which the WWC calls "interventions." Many studies of education interventions make claims about impacts on students' outcomes. Some studies have designs that enable readers to make causal…

The What Works Clearinghouse (WWC) Standards Briefs explain the rules the WWC uses to evaluate the quality of studies for practitioners, researchers, and policymakers. Attrition (loss of sample) occurs when individuals initially included in a study are not included in the final study analysis. Attrition is a common issue in education research and…

This protocol guides the review of research that informs What Works Clearinghouse (WWC) intervention reports in the area of student mental health and well-being. This review-specific protocol is used in conjunction with the WWC Procedures and Standards Handbook (Version 3.0). This review focuses on interventions for middle, high school, and…

This review-specific protocol guides the review of research that informs the What Works Clearinghouse (WWC) intervention reports in the Secondary Mathematics topic area. The review-specific protocol is used in conjunction with the "WWC Procedures and Standards Handbook (version 3.0)." This review focuses on mathematics interventions that…