A person in such situations can be convinced by many ways. You can ask that person to keep himself in the places of those people whom he disturb and tell him the problems they face. If then also he don't understand then you should make some plans along with your teachers to teach him a lesson. Never try to do this alone as later on that child may take some kind of revenge which will not be good. So your teachers should be in notice of this. And then also he don't understand then the whole situation should be explained to his parents and then it will be the responsibility of parents. The child should also be given a strict punishment or warning like of suspension if the situation exceeds the limit.