This study proposes an empirically grounded theory of how school reform implementation relates to effectiveness, useful for developing and studying many approaches to school reform both in the U.S. and abroad, and also for assessing how policymakers and implementers might leverage various aspects of implementation to create effective school…

The Common Core State Standards Initiative (Common Core) was spearheaded by policy entrepreneurs, unveiled nationally in 2010, and initially received strong support from leaders in state and federal government, philanthropic foundations, the business sector, and teacher unions. However, the reform came into the crosshairs of an ideologically wide…