Mostly it's because their parents work and it's easier on them if they let their kids have a hot meal at school, but it's not healthy if all they get fed are highly processed foods like fries, burgers and pizzas every single day. I know one little boy who eats suggary cereal for breakfast pizza every single day at school and then comes home to a peanut butter sandwitch of an evening, he lives off of that day in day out. If his school aodpted better meals at lunchtimes at least the kid would have a better chance!