Project Summary During the past 30 years, childhood obesity has doubled for preschool children; nearly 25% of all preschool children in the United States are overweight or obese. As the obesity epidemic in preschool children rises at an alarming rate, it is familial, school, and society’s responsibility to promote healthy eating and physical activity to keep our children healthy. Research to promote healthy eating and physical activity requires a trans-disciplinary approach. As the primary gatekeepers, parents (guardians) have a crucial role in influencing their children’s knowledge, beliefs, attitudes, and practice regarding food and eating habits. While parents have a powerful impact on their children’s development and learning, many factors play a role and parents must not be made to feel solely responsible for every hurdle their children may encounter. School-based interventions and community resources involving a family focus as well as environmental change components have been effective in promoting healthy behaviors. Reading Roundup program is a sustainable literacy-based family and school nutrition and physical activity intervention program with enhanced parental/familial and community/school-based input and involvement. The program utilizes developmentally appropriate, literature books that emphasize healthy eating and physical activities for children between the ages of 3-to-6-years; in addition activities that promote healthy eating and physical activity are provided during structured time periods in the supporting school. The program is also provided to parents and the community as an extension of involvement and resources. It builds upon the original effective Reading Roundup program by incorporating children, teachers, and parents/families living in South Dakota. This proposal is aimed at evaluating the effectiveness of the Reading Roundup curriculum based on behavioral and environmental changes in South Dakota Head Start children. The project utilizes a trans-disciplinary approach to plan and deliver the curriculum to promote healthy eating and physical activity in preschoolaged children. The curriculum will expand Head Start capabilities and promote program sustainability vita utilization of trained South Dakota State University (SDSU) undergraduate and graduate students working in collaboration with SDSU faculty, a Cooperative Extension Educator, and South Dakota Head Start agencies. SDSU studetns will actively participate in the design, implementation, and evaluation fo the Reading Round-up curriculum and will participate in data collection. The specific aims is to evaluate the effectiveness of the Reading Round-up curricluum based on behavioral and environmental changes in South Dakota Head Start children based on: (1) insitute an effective and sustainable reading program that promotes healthy eating and physical activity for preschool children resulting in a decrease in prevalence of childhood overweight and obesity; and (2) build capacity, stakeholder ownership and sustainability of the program by providing the developed intervention on a statewide and regional basis with support from Cooperative Extension Services, university faculty and Head Start programs.