This study explores whether teachers and students are influenced by the size of the inner-city elementary school to which they belong. Focusing on teachers' attitudes about their responsibility for student learning and students' 1-year gains in mathematics achievement scores, we used data from almost 5,000 teachers and 23,000 sixth and eighth-grade students in 264 K-8 Chicago schools. The data were collected through 1997 surveys and annual standardized tests. We employed hierarchical linear modeling (HLM) to estimate school effects. On both outcomes, small schools (enrolling fewer than 400 students) are favored compared with medium-sized or larger schools. In small schools, teachers have a more positive attitude about their responsibility for students' learning and students learn more. Even after taking size into account, learning is also higher in schools with higher levels of collective responsibility. Thus, we conclude that school size influences student achievement directly and indirectly, through its effect on teachers' attitudes.
VALERIE E. LEE is
Lee and LoebIncreasingly, educational researchers and practitioners agree that the structural characteristics of schools have an important impact on the lives of school members. A crucial element of any school's structure is the number of students enrolled, that is, the size of the school. Almost all empirical studies that estimate the effects of school size have been conducted in high schools. They have also focused almost exclusively on how school size influences students.This study expands the body of research on school size in several ways. First, we consider physical location. We investigate the impact of school size on schools within a single large school district (Chicago), which reduces the empirical difficulties of controlling for cross-district differences. A second (and related) innovation is the social composition of the schools studied. Chicago's public schools enroll high proportions of socially disadvantaged students. Lee and Smith (1997) highlighted the special salience of size in schools like those in Chicago, which have a high concentration of minority and low-income students. Third, we investigate the effects of school size in elementary schools. All the schools in this study include the full range of elementary and middle-school grade levels (K-8); other studies of school size included only high schools. A fourth difference is a broader set of school members and outcomes that might be influenced by school size. We investigate potential size effects on all teachers in each school (regardless of grade level or subject specialty) and on all students in Grades 6 and 8. In particular, we explore size effects on student achievement and on teachers' attitudes about their students. We hypothesize that school size influences student achievement, both directly and indirectly, through teachers' attitudes.Beyond these differences, our study shares several design characteristics with a study by Lee and Smith (1997), who investigated high school size. Both...