BOKS (Build Our Kids' Success) is a before-school physical activity program which takes place in schools and was developed with support from the Reebok Foundation. Researchers from the National Institute on Out-of-School Time (NIOST) at the Wellesley Centers for Women at Wellesley College examined the association of program participation with selected academic related youth outcomes and physical activity measures for K-3rd grade children in an urban school district in the Northeast from September 2011 through June 2012. (author abstract)