What I find interesting is that no rules prevent a group of students of any age from forming a club outside of school. None. No permission needed. The school is not involved. Even parents do not need to be involved. We did this quite often as teenagers.
No lawsuits followed. No school policies tried to reach beyond their jurisdiction. No parents objected, and some even volunteered to chaperone social events like a baseball game, movie night, or a trip to the skating rink.
Suddenly, it has become "normal" for busybodies to get involved in everyone's business but their own. They need a different hobby. Go outside and touch grass or something.