School principals can play an important role in promoting teacher leadership by delegating authority and empowering teachers in ways that allow them influence in key organizational decisions and processes. However, it is unclear whether instruction and student learning are enhanced by promoting teacher influence in all aspects of school organization or whether it is better for principals to directly work on certain processes while delegating influence on others. We compare pathways from principal leadership through school organizational processes to student outcomes that include teacher influence as a mediating factor to pathways that do not include teachers' influence. Our results suggest that effective principals use teacher leadership to improve the school learning climate while they work directly on professional development and school program coherence. How do systems of leadership involving principals, teachers, and other school personnel function to improve school processes and student learning? Despite more than 4 decades of school leadership research, our understanding of how leadership systems connect to teaching and learning is far from complete
Since the publication of the Coleman report in 1966, research on the role of schools in influencing student achievement relative to the role of family background has generated considerable interest and controversy. A large volume of international and comparative research has also been devoted to studying school effects on student achievement. Relatively few studies have examined international differences in the importance of schools in bridging achievement gaps based on socioeconomic status (SES). Using PISA 2012 data, this study examines the role of schools in bridging within-school SES gaps in achievement and compares findings across 61 countries. Contrary to prior research, we find that schools may have limited ability in bridging SES gaps that exist within schools. We also find that across all countries included in the study, specific factors such as the school's learning environment and school context are not systematically associated with within-school SES gaps.
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