So. Last year my son had a whole class party (film and popcorn in a village hall) and two boys in particular caused utter mayhem. I had to move them to a different part of the hall in the end. Now, if I invite them this year, I want to make it clear that I want a parent with them. I can't ignore 20 kids to deal with the behaviour of two. Does this seem unreasonable? Also, how would I put it? Due to the behaviour of your son at my sons party last year, if he's coming this year, I need you or another adult there to take responsibility for managing him? Seems a bit rude! These boys rarely get invited anywhere, bless them, so I don't want to exclude them, but honestly, they're veryvery difficult!