That one line tells us who's in charge.
They had been held for a metal detector search...? It doesn't sound like a school it sounds like a prison.
When do we finally come to the conclusion that not everyone should be required to have a public education? As long as schools have to have cameras and metal dectators it's educational mission is compromised to a point where it's not worth much.
Jerks who don't want to learn and keep others from leaning MUST be barred.