Motivated by the passage of the No Child Left Behind (NCLB) Act, all states operate accountability systems that measure and report school and student performance annually. The purpose of this study is to examine the effects of interim assessments on the achievement gap. The authors examine the impact of interim assessments throughout the…

Teachers spend most of their time in school in classrooms, and their instruction and teaching practices may be affected by classroom context such as class size. We examine whether teacher effects interact with classroom context such as class size. Specifically, we seek to determine whether teacher effects are more pronounced in small classes than…

The authors examined the differential effects of teachers on female, minority, and low-socioeconomic status (SES) students' achievement in Grade 4. They used data from a randomized experiment (Project STAR) and its follow-up study (LBS). Student outcomes included Grade 4 SAT scores in mathematics, reading, and science and student demographics…

The findings on the social distribution of the immediate and lasting benefits of small classes have been mixed. We used data from Project STAR and the Lasting Benefits Study to examine the long-term effects of small classes on the achievement gap in mathematics, reading, and science scores (Stanford Achievement Test). The results consistently…

The study reported in this article investigated the differential effects of teachers on female, minority, and low-socioeconomic-status (SES) students' achievement. I used data from a 4-year, large-scale, randomized experiment (Project STAR) that was conducted between 1985 and 1989 in Tennessee, in which students and teachers were randomly assigned…