Wear a pointy witch hat and long dress robes.
Hermione Granger
Ollivander
Ernie McMilan is a Hufflepuff student at Hogwarts school and is also a member of Dumbledore's Army.
No, Hogwarts is a fictional boarding school in the Harry Potter series.In real life there are thousands of online RPG games where it is possible to play a student at Hogwarts.
There is no real Hogwarts school; Hogwarts is a fictional place.There is no real Hogwarts school; Hogwarts is a fictional place.There is no real Hogwarts school; Hogwarts is a fictional place.There is no real Hogwarts school; Hogwarts is a fictional place.
You can be a member of Hogwarts on Pottermore.com
No, education at Hogwarts ends after the seventh year.
Hermione Granger
No, Hogwarts doesn't blow up.
Ollivander
Cederic Digory
Why yes He is, based on the results of his OWLs .
As a student at Hogwarts, Arthur was in Gryffindor.
Poliakoff is the surname of a Durmstrang student who came to Hogwarts during the Triwizard Tournament.
Ernie McMilan is a Hufflepuff student at Hogwarts school and is also a member of Dumbledore's Army.
Michael Corner is a Ravenclaw student at Hogwarts school and is also a member of Dumbledore's Army.
If you mean in Harry Potter and the Order of the Phoenix, then it was Dolores Umbridge.