It’s immoral to accept free lunch.

Reader: no one, not one person who genuinely needs charity will ever read this blog post. So calm down.

And then call the school and inform them they are not to serve your child(ren) lunch unless your child(ren) pay (or what is equivalent, you have set up the lunch account and it has money in it).

I am calling the school now. I will report back with how the conversation went.