A key objective of the U.S. Department of Agriculture (USDA) for its National School Lunch Program (NSLP) and School Breakfast Program (SBP) is to ensure that children have access to healthy, well-balanced meals. The Food and Nutrition Service (FNS) of USDA sponsored the third SNDA study to provide up-to-date information on the school meal programs, the school environment that affects the programs, the nutrient content of school meals, and the contributions of school meals to students’ diets. Data were collected from a nationally representative sample of districts, schools, and students in school year (SY) 2004-2005. The nutrient content of school meals offered and served was compared to USDA’s current regulatory standards. Students’ diets were assessed using the Dietary Reference Intakes (DRIs), the most up-to-date scientific standards for assessing dietary status.