Hogwarts he is detected using magic in the presence of Muggles, a serious offence among the wizarding community. Dumbledore argued in Harry's defence, stating that it was done in self-defence, and that the Ministry has no authority to expel students – such powers are invested in the Headmaster and the Board of Governors. Snape has attempted to have Harry expelled, and he attempted to have Harry's father, James Potter, expelled when they were at Hogwarts together. The only student known to have been expelled is Hagrid, for the murder of Myrtle with an acromantula believed to be the Monster of Slytherin
The Demon Headmaster books. His name is never revealed; he is referred to only as 'the Headmaster' both in the books and on television, except when he takes on an alias - such as the Computer Director in "The Prime Minister's Brain", and on each occasion he uses a title rather than a name. First Published in 1982. Dinah Glass moves in with Lloyd and Harvey Hunter and at first does not like them. Soon she discovers that at her new school, the Headmaster is very strange and she finds herself saying things like, ""I think the Headmaster is a marvellous man and