Making effective use of the findings of research has long been a problem for school leaders. Research has demonstrated the effectiveness of a number of programs, approaches, and techniques, but the gap between what we know and what we are able to implement is a persistent difficulty in the schools. However, the practice and science of implementation has emerged to more reliably and effectively bridge this gap. This book provides a guide to the conceptual and practical knowledge principals, superintendents, and other school leaders need to implement evidence-based educational innovations.