Educators devoted to school reform focus all too often on the isolated components of K-12 education--this is the essential premise of this powerful new book. If we are truly committed to improving our schools, the author contends, then we must focus on the interdependence of variables that affect student learning, both inside and outside the classroom. The book is divided into three distinct parts. In Part 1, Danielson introduces the Four Circles Model to define the criteria for successful school improvement: Everything educators do to help their students learn must be based on what educators want (school, district, or state goals), believe (values and principles), and know (educational research). In Part 2, the author provides a framework for improving schools--including curriculum, team planning, and policies and practices affecting students--and connects every concept to the criteria presented in Part 1. She also provides a handy rubric at the end of each chapter, both as a summary of main points and as a tool for educators to gauge the needs of their school. Part 3 offers readers guidelines on how best to implement the framework using action planning. Brimming with perceptive advice and thought-provoking arguments, this book is both a wake-up call and a roadmap to success for those determined to provide students with the best education possible.