This trio has toured the U.S. for a decade teaching the idea of professional learning communities and learning from both research and experiences on the ground. Even better, they are “library friendly,” as they recognize the benefits of teacher librarians as active participants in the serious discussion of educational excellence. This volume brings together their reflections from a decade on the essential components of what a professional learning community does, how it succeeds, and how it makes a major contribution to school improvement. Topics throughout are indicative of their approach: shared mission, collective inquiry into best practice, action orientation, a commitment to continuous improvement, results orientation. If your school has experimented with PLCs or is thinking about it, this is a major and important background read for the teacher librarian who understands how much a central role in the PLC can benefit both the school and the learning commons idea. A must read.