How do schools even work?

The school I send my kids too is fully combined pre school through 12th grade. We have a school nurse on site only 2 days a week. Our superintendent only works part time. We do not have any special offerings for classes no arts, no home ec, no shop/woodwork. They do not have the money to have these programs anymore. Recently we were behind on our food service bill by 10k and we're threatened no more deliveries.

More and more I am contemplating open enrolling to another district but nine of this even seems real to me. How is a school able to operate like this?