Although much literature highlights the importance of teacher expectations for students' academic success, a very small number of studies used large-scale data to examine school-level factors associated with group-level teacher expectations -- defined as expectations that teachers have for many students in their class or school, rather than for a…

Purpose: The purpose of this study was to examine how principal support, professional learning communities, collective responsibility, and group-level teacher expectations affect 11th-grade student math achievement. Research Methods: Data for this study were from the High School Longitudinal Study of 2009, administered by the U.S. Department of…