Gee...
Starve them at school...and they eat a bunch of junk as soon as they get home.
Who could have predicted that?
I’ve seen school lunch rooms. A lot of kids throw away what they don’t like and bring in candy bars and chips (etc) to eat instead. But you know what? There are schools with the same financial restrictions and regulations that work with the suppliers and are able to provide “legal” meals the students like.