I hand these out at the beginning of each quarter and my scholars put their names on them. They may use them whenever they like, but if they don't use them or lose them at the end of the quarter, they get a free 100 for turning the page back into me. I tell my scholars that I don't like them leaving my classroom - so these are for emergencies. This helps them make the decision if they can wait for their passing period or if it's an emergency and they need to go now.