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 legal injunctions to ensure the books' secrecy before their launch. These injunctions have drawn criticism from civil liberties campaigners over their potentially sweeping powers over individual freedoms. In 2003, in an attempt to maintain secrecy over the impending release of the fifth "Harry Potter" book, "Harry Potter and the Order of the Phoenix", Rowling and her publishers sought and received a groundbreaking injunction against "the person or persons who has or have physical possession of a copy of the said book or any part thereof without the consent of the Claimants". The ruling obtained, for the first time in British