"After twenty-five years, the professional learning community (PLC) process continues to produce results across the United States and around the world. In this fourth edition of the best-selling Learning by Doing: A Handbook for Professional Learning Communities at Workª, the authors use updated research and time-tested knowledge to address current challenges in education, from the learning gaps exacerbated by the COVID-19 pandemic to the need to drive a highly effective multitiered system of supports. When collaboration and continuous improvement are embedded in the fabric of the school, schools can weather these challenges and those yet to arise as they strive for student and adult learning"--