SIERRA VISTA, Ariz. (KGUN) — Earlier this summer, a new state law expanded the list of banned ingredients that can be served within public and charter schools. Arizona public schools must follow the Arizona Healthy Schools Act, which bans 11 ingredients, including seven food dyes: Yellow Dyes 5 and 6, Blue Dyes 1 and 2, Green Dye 3, and Red Dyes 3 and 40. Valerie Weller, Sierra Vista Unified School District's public information officer, said the biggest change involves families bringing snacks to share with other students. "What'll happen is if you do bring in snacks to share with the class, just check those ingredients. To help families stay compliant, Sierra Vista Unified School District is offering celebration packs that can be purchased through their food vendor.