As the search for solutions that effectively address childhood obesity continues, organisations and communities across the country are experimenting with innovative strategies and new ways of implementing existing interventions aimed at changing children's environments to prevent obesity. This book is an overview of the Early Assessment of Programs and Policies to Prevent Childhood Obesity project which identifies and assesses at the local-level programs that have been implemented with apparent success to prevent obesity by improving eating habits and physical activity levels of children. The project is a collaborative effort led by a team from the Robert Wood Johnson Foundation and the Centers for Disease Control and Prevention.