every classic regeneration of the Doctor as a university professor.
one: anthropology. he sucks at it. regardless, as someone with a degree in anthropology, i think he'd fit in. this dude is a being of pure chaos, but he looks like he was born to eat raisin bran. he's an anthro prof.
two: drama and improv. this is a guy that flies by the seat of his pants. he's my goofy little scrimblo, my scooby-dooby bimbam. i think he'd make a great theater, music, or dance professor - any excuse to perform.
three: chemistry or engineering. his car is literally sentient. he's a crime-fighting mad scientist masquerading as a frilly dandy, and by golly, he can invent shit. he's tenured, so they let him do whatever he wants, which usually involves breaking the laws of physics.
four: anthropology, but now he's better at it. he's always giving people little treats and making friends. he's still a bit of a wild card, but i think he'd be great at telling stories and giving long-winded lectures about culture, and he dresses like a lesbian grandma.
five: track and field, or literature, but you already knew that. he's a twink from 1983 who looks like he leads a barbershop quartet. he'd definitely teach at some posh ivy league school, and the Master would be a science professor, and they'd have an intense rivalry from afar, laced with palpable sexual tension.
six: language and poetry! writing stage plays, tongue twisters, sonnets, and soliloquies, six is the universal wordsmith! i wish The Two Doctors had just been about six and two going to brunch with their theater kid TAs.
seven: ohhh hohohoho..... hehehehehe. according to Human Nature (1995), he was a history professor at an all-boys school - but i think he could teach just about anything, like Twelve: poetry, particle physics, same thing. he's a quick-witted strategic thinker, so he'd be in charge of debate club and chess club.
eight: humanities, music, or French. he was designed in a lab to be the perfect professor. he's gay, he wears a cravat, he has a million fully lit candelabras going in his office at all times, and he sings while cooking breakfast. Dorian Gray, eat your heart out.