Do you have to do before and after care???? If you don't get rid if them cause school age kids are terrible especially when you have siblings .....I want to choke my own school age son in the summer I couldn't imagine other people's. I guess my advise would be to have a dialogue with the parents and let them know about the behaviors you are dealing with ( likely they all ready know and deal with it at home or turn a blind eye to it). Maybe together you can cone up with something. Not sure where you are located but in my area b and a care is hard to come by so when you get it you don't want to lose it.