Among all in-school factors that impact student learning, teachers carry the most weight -- but school leaders are not far behind. Decades of research have proven the positive influence principals can have on student achievement, school climate and teaching quality. New evidence suggests that their impact may be even greater than previously…

Background/Context: School principals have long played a central role in managing building operations and supervising school employees. Over the past two decades, however, policy developments--including site-based management, external accountability measures, and teacher evaluation systems--have increased expectations that principals also improve…

Although practitioners have been asked to make fundamental shifts in their beliefs about reaching all students, the structures of high schools to support that work have not changed appreciably. Teachers teach in isolation, departmental silos lack curricular and instructional coherence across core subject areas, and few teachers share students in…