Imagine if you had a little six year old daughter in that classroom. Would you want her in the same classroom where furniture was being thrown around? Would you want her sitting next to a child who is strong enough to throw furniture and injure the teacher?
The people on this thread who think the authorities over-reacted would never allow their own children to be endangered.
Exactly, this isn’t the only child in the school. The protection of the other children is of paramount importance.