They can be removed without "punishment". Simply, have them in a seperate ro on the premises and watched by 2 teachers at a time.

They are also at risk of injury.

As long as they arent punished expressly, they can still be treated according to the situation.

Hell the school could act on info of the evidence provided without acknowledging the legal process at all. High schools dont have a judge or jury

Your statement isnt totally accurate and is a process of the legal systems actions and punishments. Not EVERYONE.

Just like how freedom of speech doesnt mean you can say anything