In this article, we examine classroom observations from a 3-year large-scale randomized trial in the Los Angeles Unified School District (LAUSD) to investigate the extent to which a professional development initiative in inquiry science influenced teaching practices in in 4th and 5th grade classrooms in 73 schools. During the course of the study,…

Although experimental results indicate that smaller classes promote higher achievement in early elementary school, the broader literature on class-size effects is inconclusive. This seeming contradiction raises questions about the generalizability of experimental evidence, an issue that this article addresses by examining the effects of class size…

Used national survey data to examine the impact of high school algebra on students who differed in mathematics skills before entering high school. Regression analysis with over 12,500 students indicates that all students benefit from taking algebra, although benefits are smaller for those with very low prior achievement. (SLD)

Data from 882 high school students in 48 mathematics classes demonstrate that student achievement is significantly lower in general-track classes than in college-preparatory classes, with achievement in transition classes (classes in California and New York bridging the gap between elementary and college-preparatory mathematics) falling between…

Using data from the National Education Longitudinal Study, the achievement growth of students in magnet schools, Catholic schools, and secular private schools was compared to that of students in public comprehensive schools during the first two years of high school. Some advantages of magnet schools and Catholic schools are discussed. (SLD)

Processes and criteria used in assigning students to honors English classes in 5 communities (n=approximately 1,800 students) were studied through qualitative and quantitative data. Similarities and differences in the five districts are detailed, with attention to past ability-group positions and the role of socioeconomic status. (SLD)