Imagine all professionals in all schools engaged in continuous professional learning! Education experts Shirley M. Hord and William A. Sommers explore the school-based learning opportunities offered to school professionals and the principal's critical role in the creation, development, and support of an effective professional learning community (PLC). This book provides school leaders with readily accessible information to guide them in initiating and developing a PLC that supports teachers and students. Using field-tested examples, the text illustrates how this research-based school improvement model can help educators: Increase leadership capacity Embed professional development into daily work Create a positive school culture Develop accountability Boost student achievement