 The present study found that food waste in school lunch programs in Thailand is prevalent, especially among kindergartners. The study estimated that each child generates approximately 71 grams of plate waste per day, which represents a significant loss of calories and money. The findings suggest that there is room for improvement in the design of school lunch programs in order to reduce food waste and ensure children receive adequate nutrition. This article was authored by Jareneth Petchu, Narasara Kichutima, and Natapol Tansafum.