This semester I had three sections of a remedial college writing class, where the final exam is graded by a committee of the teachers, who get to put in several hours outside of class this week doing so. Hooray, I’m on the committee!
Every college final exam always has that one person who stays to work on their test for an hour after everyone else has left. They only leave because time runs out. On Tuesday I had one such situation where the lights in the building automatically shut off at 10 PM. The student cheerfully continued writing until I said it was time to go.