Hello everyone. My son had an unfortunate situation at school. On Thur…

Hello everyone. My son had an unfortunate situation at school. On Thursday, a classmate started bullying my son from the very morning. During the third lesson (literature was being taught), the teacher of Russian language divided the kids into groups, gave them a task, and left to collect paper waste. During her absence, the boys managed to fight and as a result, my son hit him in the nose, there was bleeding. The nose is fine, and the boy is also okay. Only the parents of that boy threaten their acquaintances with a lawyer. Is there a law about this or not?