My Chemistry teacher exasperatedly said of me "he'll probably get his A grade, but he won't deserve it".I'm very confident that either the conversation didn't happen or Jack was given a bit of a pep talk. Similar to the conversation a teacher had with my son when he was being an hole in year 11. 'You're a bright kid and you can do really well but you have to get your head down' type thing.
Reader, I got a C.