Troll (grade)

Troll is one of the three failing grades, out of six grades overall, in the Ordinary Wizarding Levels, Nastily Exhausting Wizarding Tests and Wizards' Ordinary Magic and Basic Aptitude Tests. It is the lowest mark, immediately below Dreadful. There are no known recipients, though it is joked that Crabbe received a T in Defence Against the Dark Arts. Also, Hermione didn't know it existed.

Appearances

 * Harry Potter and the Order of the Phoenix
 * Harry Potter and the Order of the Phoenix (video game)
 * Harry Potter and the Half Blood Prince
 * J.K. Rowling's Official Site

Troll (note)