Introduction: Successfully addressing childhood onset obesity requires multilevel (individual, community, and governmental), multi-agency collaboration.
Methods: The Healthier Options for Public Schoolchildren (HOPS)/OrganWise Guys (OWG) quasi-experimental controlled pilot study (four intervention schools, one control school, total N=3,769; 50.2% Hispanic) was an elementary school-based obesity prevention intervention designed to keep children at a normal, healthy weight, and improve health status and academic achievement.