In education research and in many other fields, researchers are often interested in testing the effectiveness of an intervention on multiple outcomes, for multiple subgroups, at multiple points in time, or across multiple treatment groups. The resulting multiplicity of statistical hypothesis tests can lead to spurious findings of effects. Multiple…

This policy brief summarizes the positive results of a rigorous evaluation of Reading Partners, a widely used program that offers one-on-one tutoring provided by community volunteers to struggling readers in low-income elementary schools. A total of 1,265 students in 19 schools in three states were randomly assigned to receive Reading…

This study reports on an evaluation of the "Reading Partners" program, which uses community volunteers to provide one-on-one tutoring to struggling readers in underresourced elementary schools. Established in 1999 in East Menlo Park, California, the mission of "Reading Partners" is to help children become lifelong readers by…

This paper uses data from the Head Start Impact Study (HSIS), a nationally representative multisite randomized trial, to quantify variation in effects of Head Start during 2002-2003 on children's cognitive and socio-emotional outcomes relative to the effects of other local alternatives, including parent care. We find that (1) treatment and control…

Low-income preschool children face many risks to their social-emotional development that can affect their school experience and social outcomes for years to come. Although there are some promising approaches to improving young children's social-emotional competence, the evidence base is limited, particularly on the effectiveness of these…