Does your child's school offer optional purchased lunches & snacks? Do you budget for your child to participate?
My children's school has optional $2/slice pizza every Tuesday and has a optional hot lunch once a month plus some other days of optional popcorn, hot chocolate, etc. These are fundraisers for the school. I do allow my son to purchase the pizza sometimes. I find that the hot lunch days are very expensive at a minimum of $8 each, so he has never participated.
The school also has a fruits, veggie & milk program run by the Agricultural Council that happens every 2 weeks & is free to all students in the school. They get a piece of fruit or a veggie & a container of milk.