Or, at least, double-secret probation!
What you do outside of school and out of uniform is one thing but if you’re representing the school and especially in uniform, you darned well better behave and act accordingly. If I were the director, they’d be thrown out of class with a big fat Failure or Incomplete on their transcript. No more scholarships, either.
The Dean of Students should have placed them all on probation if not expulsion.
Or, at least, double-secret probation!