The school I work for once had a student who had left the school sell a MacBook to an unsuspecting member of the public. It hadn’t been unenrolled.

We wrote it off and removed it from DEP for the poor guy. The student was long since gone and we had depreciated it anyway, so it wasn’t a huge loss. We realised not doing so was also potentially a reputation issue for the school also.

We’ve since tightened up leaving processes so this is unlikely to happen again.