a lot. pretty much, there's a new one every year
Imelda Staunton played Dolores Umbridge, the new Defense Against the Dark Arts teacher in the fifth Harry Potter movie.
Gilderoy Lockhart was the Defence Against the Dark Arts teacher in Harry Potter and the Chamber of Secrets.
He is in the second book/movie, "Harry Potter and the Chamber of Secrets" as the new Defense Against the Dark Arts teacher. And then again in the 5th book, where Harry, Ron and Hermione come across him in the hospital.
Harry Potter and the Goblet of Fire as the Defence Against the Dark Arts teacher. However, Moody was attacked and locked in a trunk for a year so we don't ever meet the real Moody until Order of the Phoenix.
Cuthbert Binns, who teaches History of Magic.
Amycus Carrow, a Death Eater, is the Defence Against the Dark Arts teacher.
Severus Snape (the D.A.D.A. teacher in Harry Potter's 6th. year).
Imelda Staunton played Dolores Umbridge, the new Defense Against the Dark Arts teacher in the fifth Harry Potter movie.
The first defense against the dark arts teacher in the Harry Potter series is called Professor Quirrell.
Gilderoy Lockhart played the Defence Against the Dark Arts teacher, in Harry Potter's second year at Hogwarts (Chamber of Secrets).
Gilderoy Lockhart was the Defence Against the Dark Arts teacher in Harry Potter and the Chamber of Secrets.
The cast of Harry Potter Parent Teacher Conference - 2012 includes: Scott Kruse as Harry Potter Candice Rowland
Tom Riddle jinxed the position, because he was rejected as a teacher for this subject.
He is in the second book/movie, "Harry Potter and the Chamber of Secrets" as the new Defense Against the Dark Arts teacher. And then again in the 5th book, where Harry, Ron and Hermione come across him in the hospital.
Remus Lupin, The Defence Against the Dark Arts teacher in The Prisoner of Azkaban
harry and ron are aurors. hermoine works for law enforcement.neville is herbology teacher
Most likely every year at hogwart in harry there always always a new teacher in all harry potter except the first harry potter