Do you leave a list of names of the sudents who misbehave? I used to not do it. I figured there was no point, especially with the little kids, who don't remember what they've done by the time the next day rolls around and the regular teacher is back. Nowadays, I do it. With the older kids, I make them write their own name on the board if I don't know it. When they try to get snarky and write someone else's name, I ask them if they really believe that none of their classmates will sell them out. I tell them that somebody will always be honest and report the truth, so it may as well be them. With the younger ones, if there isn't a name tag on their desk, they're scared enough to tell their name if you ask. I've found that whenever I get to talk to the teacher afterward, the reaction is always the same. He or she will always say that those are the kids they expected to see get in trouble. I've found that if you let them think you have a partnership with the regular teacher, even if you don't ever meet him or her, it tends to help just a little bit.