Well, really for any parent activity-we did our Open House last night and I never know what to do with the kids the parents bring who are siblings to my students. Parents were just letting their other kids run around, my word wall actually got torn down at one point. One of the little ones ran into the classroom next door and started messing up her papers. They are taking a bunch of things off the shelves and just dumping them out on the floor. I spent like 15 mins this morning cleaning up (because it was already after 7:00 when they left and I was ready to go home). Do you say anything when this happens? I try talking to the kids and saying "ok, please don't play with that"-hoping the parent will take the hint, but it just doesn't happen. What do you do?