Magic in Harry Potter extraordinarily high turnover of staff members—throughout the series no Defence Against the Dark Arts teacher has retained the post for more than one school year. Harry is exceptionally skilled in this subject. During the period the story takes place, the class is taught by Quirinus Quirrell (book one), Gilderoy Lockhart (book two), Remus Lupin (book three), Bartemius Crouch Jr impersonating Alastor "Mad-eye" Moody (book four), Dolores Umbridge (book five), Severus Snape (book six), and Amycus Carrow (book seven). Hagrid suggests in "Harry Potter and the Chamber of Secrets" that ""They're startin' ter think the job's jinxed. No one's lasted long
Legal disputes over the Harry Potter series the sixth "Harry Potter" book. "The two matters are completely unrelated", said a Bloomsbury spokeswoman, "We decided today that we couldn't risk having arrears with anybody." The dispute had been "going on a while – going on for weeks actually." Asda responded that Bloomsbury owed them £122,000 ($224,000) ("for pulping and for other book trade issues and work we have done for them") and that, as one company spokesman claimed, "It just seems funny that after we expose the potty Potter price hike, Bloomsbury are trying everything they can to stop kids getting hold of "Harry Potter" at a price