Systematic reviews are a useful tool for decision makers because they identify relevant studies about the effectiveness of a policy or program of interest, assess the quality of the evidence from the relevant studies, and summarize the valid findings. Mathematica's Center for Improving Research...

Educators and policymakers have long debated which textbooks and their associated instructional approaches have the greatest impact on student learning in key subjects. Mathematica’s large-scale federal study of the effectiveness of four early math programs brings new clarity to what works in...

This paper explores how the design features of curriculum materials might influence potential opportunities to learn and student outcomes through a comparative, documentary analysis of four mathematics curricula commonly used in the United States.