Totally agree with the idea of a parent deputation approach. These boys could seriously affect your daughter's class all the way through the school. I have found thatt the best way to establish if the behaviour can be controlled or if there are deeper, can't be helped without support, issues, is to begin by sending the children home at dinner time if they don't behave. Presumably, they play up for the dinner ladies also? This is done as a threat initially, but it MUST be carried out if the behaviour is not acceptable. You can ask to see the behaviour policy and suggest that this is put in if it's not there. This actually causes the parents more inconvenicne than any other sanction as they have to come up and down to school 4 times a day and they get the message that the behaviour cannot go on. In the case of stubborn parents who won't come to collect, a CAF meeting needs to be suggested on the grounds that the continuing bad behaviour is indicative of children who are failing to thrive. The involvement of othe agencies can then go one of two ways- parents do not want it so they do the dinner time collecting and the behaviour improves, or they welcome the additional support because they know they need it anyway and so the behaviour improves once this is in place. Good luck- I think we have all taught classes we wouldn 't want our own child to be in and that's why this situation cannot go on.