I have a cart of iPads in my high school classroom. Each iPad is shared by several students in different classes throughout the day. A clever student in one class decided to lock one of them. We have already unlocked it by restoring it, etc., but I'd like to prevent this from happening in the future. I was noodling around with the new Apple Configurator this morning to force no passcode, but I couldn't find such a setting. The best I could come up with is to set my own passcode, device lock to never, and grace period the longest available (4 hours). That would mean, though, unlocking every single iPad for the students with my secret code at least once a day. Ugh.
Does anyone know of a way, official or unofficial, to prevent a user from setting a passcode on an iOS device?