The purpose of the study is: (a) to identify School Food Policy Environments and Policies (SFEPs) that are most likely to affect students’ dietary behaviors and/or weight, and (b) to understand how both the existence and impact of SFEPs may vary along socio-economic and racial/ethnic lines. Results of our proposed analyses will suggest which, if any, SFEPs are likely to affect students’ dietary behaviors, caloric intake, and/or weight and obesity levels. Data will be from the third School Nutrition Dietary Assessment Survey (SNDA-III) which provides (spring 2005) data on a nationally representative, cross-sectional sample of public school districts, schools, and students.