The purpose of the Translation of District Sun Safe Policies to Schools study was to test whether schools need assistance to facilitate the implementation of school district board-approved sun safety policies by individual elementary schools. The intervention is expected to produce a change in practices at the school level and to improve the sun safety behavior of children attending the intervention schools compared to control schools. A group of 40 school districts in Southern California that adopted board policy 5141.7 for sun safety provided 118 schools that were randomized to a intervention condition or to an attention control condition. The primary outcome is change in school-level sun safety practices based on 10 Centers for Disease Control and Prevention (CDC) categories for policy change (i.e., sunscreen use, UV protective clothing, hats, student education, teacher education, provision of shade, scheduling to avoid peak UV exposure, parent outreach, resource allocation for sun safety, and an accountability system). This primary outcome was assessed by a survey of the principal and one teacher at each school (N=118 principals and 113 teachers at pretest). Parents (N=1770 at pretest) of children attending the schools completed a self-report measure assessing the secondary outcomes of change in individual-level sun safety behavior of their elementary school aged children and number of communications received from the school regarding sun safety. Assessment of principals, teachers and parents occurred at pretest, just prior to randomization, and at a posttest 20-months after the pretest. One Parent Teacher Association (PTA) representative per school was contacted to assess PTA involvement in intervention activities related to sun safety.