He doesn't officially become a professor but JK Rowling does mention that he goes to Defence Against the Dark Arts lessons in Hogwarts to give lectures. He actually becomes an Auror.
Defense against the dark arts
Arithmancy. Hermione takes this class, but Harry does not so we never actually meet Professor Vector.
First year students take flying lessons which is taught my Madam Hooch.Students are required to take the following class in their first five years at Hogwarts:Transfiguration taught by Professor McGongallCharms taught by Professor FlitwickHerbology taught by Professor SproutPotions taught by Professor SnapeHistory of Magic taught by Professor BinnsAstronomy taught by Professor SinistraDefence Against the Dark Arts taught by Professor Qurriel (first year), Professor Lockhart (second year), Professor Lupin (third year), Fake Professor Moody i.e Barty Crouch jr (fourth year) and Professor Umbridge (fifth year).In third to fifth year along with the subjects listed above Harry Potter studied:Divination taught by Professor TrewlaneyCare of Magical Creatures taught by Professor HagridIn sixth year students are allowed to drop and choose whatever subjects they please. Harry took the following subjects in sixth year (and seventh had he returned for it):Potions taught by Professor SlughornCharmsDefence Against the Dark Arts taught by Professor Snape (sixth year), Professor Carrow (seventh year, turned into 'Dark Arts')TransfigurationHerbology
Philosopher's (Sorcerer's) Stone: Quirinus Quirrel.Chamber of Secrets: Gilderoy Lockhart.Prisoner of Azkaban: Remus Lupin.Goblet of Fire: Barty Crouch Jr disguised as Alastor Mad-Eye Moody.Order of the Phoenix: Dolores UmbridgeHalf-Blood Prince: Severus SnapeDeathly Hallows: Amycus Carrow (taught Dark Arts, not defence)
A Boggart.
Hogwarts School of Witchcraft and Wizardry.
quiditch
Amycus Carrow, a Death Eater, is the Defence Against the Dark Arts teacher.
Gilderoy Lockhart was the Defence Against the Dark Arts teacher in Harry Potter and the Chamber of Secrets.
From the first year it self students at Hogwarts have The Defence Against The Dark Arts subject. The depth and difficulty increases year by year.
One, in Defence Against the Dark Arts because of the DA
Remus Lupin
He doesn't officially become a professor but JK Rowling does mention that he goes to Defence Against the Dark Arts lessons in Hogwarts to give lectures. He actually becomes an Auror.
Alastor 'Mad-Eye' Moody was given the role of Defence Against the Dark Arts professor. However, before he could start his job, he was captured by Barty Crouch Jr who used Polyjuice Potion to pretend to be Moody.
Gilderoy Lockhart, a famous author who takes the position of Defence Against the Dark Arts professor. He is later revealed to be a fraud.
Alastor "Mad-Eye" Moody. He was actually a fake; not the real Alastor Moody, but was Barty Crouch Jr who had taken the Polyjuice Potion to look like him.