Facing relentless pressure to improve student achievement, many states and districts are using coaching as a policy lever to promote changes in practice. This special issue centers on the policies and politics of coaching, and this editorial commentary highlights what we know about the role of coaches and coaching in the field of education. Then I introduce and synthesize the special issue's seven empirical contributions. Taken together, these papers, using qualitative and quantitative methods, attend to the implementation of diverse coaching models. These papers surface novel findings on the coaching of both teachers and principals and have implications for scholars, reformers, and practitioners. Finally, I make recommendations for future research on coaching that is grounded in theory and which would advance our understanding of both educational policy and change.