People with many developmental disabilities (DD) have higher rates of obesity and lower fitness than those in the general population, and children with DD are at elevated risk. The purpose of this proposal is to establish a community-based participatory research network spearheaded by local organizations in south central Pennsylvania to decrease the risk of obesity and improve health and wellness of school-age children with DD such as autism and intellectual disabilities. Through this initiative, the community's views will culminate in development of a community-based participatory research (CBPR) agenda for developing research projects on obesity in children with DD. The effort will lead to a self-sustaining collaborative network dedicated to the goal of promoting good health through everyday living for this greatly under-served population. People with many DD have higher rates of obesity and lower fitness than those in the general population, and children with DD are at elevated risk.