State and municipal policymakers are increasingly addressing the practice of social promotion in schools--moving children along to the next grade whether or not they have mastered the curriculum--by mandating test-based grade promotion. This paper draws conclusions about the effects of a policy limiting social promotion. To do so, it employs a…

This guide is designed to help researchers make sure that their research reports include enough information about study measures so that readers can assess the quality of the study's methods and results. The guide also provides examples of write-ups about measures and suggests resources for learning more about these topics. The guide assumes…

This paper provides practical guidance for researchers who are designing and analyzing studies that randomize schools--which comprise three levels of clustering (students in classrooms in schools)--to measure intervention effects on student academic outcomes when information on the middle level (classrooms) is missing. This situation arises…

This study examined the impact of the Four Powerful Comprehension Strategies on comprehension achievement and reader self-perception of struggling readers in grades three, four, and five. The study also observed the relationship between the intervention and learning style processing preferences. There is a need for effective reading intervention…

This article provides practical guidance for researchers who are designing studies that randomize groups to measure the impacts of educational interventions. The article (a) provides new empirical information about the values of parameters that influence the precision of impact estimates (intraclass correlations and R[superscript 2] values) and…

This document contains a narrative overview of the hierarchy, followed by a one-page graphic summary. The purpose of the hierarchy is to help agency/program officials assess which study designs are capable of producing scientifically-valid evidence on the effectiveness of a STEM education project or practice ("intervention"). More specifically,…