The Know What's on the Tray Act of 2026 requires schools that participate in federal school lunch and breakfast programs to publish detailed information about their menu items on school or district websites at least seven days before serving them. The required information includes the name of each food item, a complete ingredient list, the manufacturer or producer, where the food is made, and whether it is locally sourced or from a family farm. The U.S. Department of Agriculture has 180 days after the bill becomes law to issue regulations to help schools comply with these requirements. The new rules apply to all schools participating in the federal lunch and breakfast programs starting with the school year that begins at least 18 months after enactment. This bill aims to give parents and students greater transparency about what foods are being served in school cafeterias.