By all means, let's form a mob and go after the teacher. Kids of this age, tend to imitate what they see at home or on TV. Who can say for sure which one instigated the actions? I am sure neither of the boys even had a clue that they were doing anything out of order. The best thing to do is just explain to them that what they did was not acceptable and don't do it again. Making a big issue of the matter will simply do more harm to both boys than a simple corrective talk. I see no reason for Social services to be involved at this point. Hopefully this will not be blown out of proportion for the children's sake.