The teacher could step in, but she won’t. The Principal could, but he won’t. They are all afraid of lawsuits. I say good for this father for stepping in. This kid is probably REAL trouble - and they can be at this age, if they are Hood Impaired, let’s say, or raised by feral older folks (I won’t use the word ‘adults’). When he’s older, this kid will just be bigger trouble. May as well nip it in the bud. (ex-teacher/ then homeschooler).
He has to draw a picture of a gun before they will act.