THE LONG-TERM GOAL OF THIS INTEGRATED PROJECT IS TO CREATE HEALTH PROMOTING SCHOOL ENVIRONMENTS THAT SUPPORT HEALTHY GROWTH/DEVELOPMENT OF CHILDREN TO PREVENT OBESITY. OUR APPROACH IS THROUGH SCHOOL-LEVEL IMPLEMENTATION OF EXISTING LOCAL WELLNESS POLICIES (LWPS). LWPS ARE FEDERALLY ARE MANDATED TO CREATE HEALTHY SCHOOL ENVIRONMENTS/OPPORTUNITIES FOR HEALTHY EATING AND PHYSICAL ACTIVITY FOR ALL STUDENTS. POLICY IMPLEMENTATION MAY OCCUR THROUGH DIFFUSION (LETTING IT HAPPEN), DISSEMINATION (HELPING IT HAPPEN), OR IMPLEMENTATION (MAKING IT HAPPEN). MOST SCHOOL SYSTEMS RELY ON DIFFUSION OR DISSEMINATION TO ACHIEVE LWP IMPLEMENTATION, LEADING TO LIMITED SCHOOL-LEVEL IMPLEMENTATION. WE PROPOSE A SCHOOL-LEVEL LWP IMPLEMENTATION STRATEGY (MAKING IT HAPPEN) THAT RELIES ON EDUCATING/TRAINING TEACHERS AND STUDENTS TO BE WELLNESS CHAMPIONS. WE WILL EXAMINE (1) THE IMPACT OF A SCHOOL-LEVEL INTERVENTION TO ENHANCE LWP IMPLEMENTATION BY TRAINING TEACHERS TO BE WELLNESS CHAMPIONS/PROVIDING TECHNICAL ASSISTANCE TO SUPPORT WELLNESS TEAM GOALS AND ACTIVITIES (WELLNESS CHAMPIONS FOR CHANGE, WCC) AND (2) THE ADDED BENEFIT OF TRAINING STUDENTS TO BE WELLNESS CHAMPIONS/CREATING A STUDENT-LED WELLNESS TEAMS TRAINED IN THE TENETS OF HEALTH LITERACY (WCC-STUDENTS, WCC-S) ON STUDENT LEVEL OUTCOMES (DIET, PHYSICAL ACTIVITY, AND OBESITY) THROUGH A RANDOMIZED CONTROLLED TRIAL. WE WILL ALSO EXAMINE (3) THE DIFFERENTIAL IMPACT OF LWP IMPLEMENTATION ON STUDENT-LEVEL OUTCOMES BY HOME AND SCHOOL-NEIGHBORHOOD ENVIRONMENT. IN THE FINAL YEARS, THE WCC AND WCC-S CURRICULA WILL BE PREPARED FOR (4) DISSEMINATION THROUGH A PARTNERSHIP WITH THE HEALTHY FOOD CHOICES IN SCHOOLS COMMUNITY OF PRACTICE (EXTENSION). DISSEMINATION STRATEGIES, INCLUDING ONLINE CONTINUING EDUCATION FOR TEACHERS AND TOOLKITS FOR STUDENTS, WILL BE TESTED FOR FIDELITY AND REACH.