I don’t see how this would have the effect of monitoring anything but the movements of their school bags. Which they can easily trade around, leave behind at school when they leave campus to play hookey, etc.
Which is exactly why I said they’re sneaky! :~D I was a kid myself. I knew where the good snacks were stashed at home! And I still watched The Wonderful World of Disney Sunday nights from the hallway after being sent to bed! lol Oh, the good ole’ days when that was the extent of bad behavior. :~/