Collective efficacy, or a shared belief that through collective action educators can positively influence student outcomes, has remained at the top of a list of influences on student achievement in Professor John Hattie's Visible Learning® research. Though collaboration tends to be focused on building community and relationships, which alone are not enough to move the needle on student achievement, collective efficacy has been embodied by many educators. This book contains stories of collective efficacy in schools where it has been actualized in practice, and includes Real-world case studies of teams who have fostered and sustained collective efficacy, Practical guidance for building collective efficacy through professional learning designs, Tools that can be adapted for specific needs or local contexts Through these accounts, readers will discover ways to capitalize on the reciprocal relationship between student achievement and collective efficacy by gaining a clear understanding of what collective efficacy looks like and how it can be accomplished.