The Policy Legislation and Nutrition (PLAN) study will examine the impact of state and local policies on the school nutrition environment and on the students’ dietary behaviors. Data will be collected from 64 rural and urban middle schools in Washington State, stratified by income level and ethnicity. Data will include policy quality, policy implementation, inventories of the foods available at each school, and dietary intake and will be analyzed to determine what factors are associated with a successful implementation of a policy by schools and associations between access to food at school and student diets.