State law recommends marketing healthy choices (signs, pricing, etc.).
Oklahoma Statutes 70-5-147. Access to foods of minimal nutritional value - Incentives to encourage healthy food choices.
C. Each district board of education shall ensure that students in high schools are provided healthy food options in addition to any foods of minimal nutritional value to which they may have access at school. Each district shall provide incentives, such as lower prices or other incentives, to encourage healthy food choices for high school students.