it is a privilege to be on the wrestling team, not a right.
So is being admitted to the school but they are still a state actor and are limited by the first amendment
you're living in a fantasy world. there are codes of conduct and team rules. hell, there's coach's discretion.
the wrestling team is a privilege, not a right. he does not have to wrestle.
i would have something of an issue had he been kicked out of school, but off an extra-curricular team? nope.
and the first amendment has nothing to do with it.