An awful situation and very disheartening and disturbing. When I worked in CAMHS secure units and was in the secure day school in the hospital grounds, the kid’s behaviour was very similar (dare I say worse, yes actually I do) but then those kids had severe mental health issues but the school where you were, was a straight forward school - those kids had no such reason to be the way they were- they were just choosing to be behavioural difficult, rude, and disrespectful