I agree with you, but there's a disagreement over that in this article. The school said if the parents didn't agree, the parents could withdraw their child. The father said the school said they would kick the son out if he didn't sign the agreement. Conflicting statements there. But I'll err on the side of the school, that they would have kicked the kid out if dad hadn't signed the ban form. I know I would have if I were the administrator.