Once food has been heated, it needs to stay hot until it is eaten. This will require the use of a thermos or other insulated container. Pre-heat the container by filling it with boiling water, carefully drain the water out while still hot, and then fill it with the hot soup, chili, or other food. This practice will keep the food hot for a longer period of time. Keep cold food cold until mealtime.
Store lunches in a refrigerator if one is available.
Pre-chill all refrigerated food. Pack frozen gel packs, juice boxes or another food item that can be frozen in an insulated lunch box or bag to keep food cold. Pack food in a suitable container if a microwave will be used to cook or reheat the food. Before eating, check that the food does not have cold spots or is too hot to eat safely. Younger students may need supervision when using a microwave oven.