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A Troll-graded W.O.M.B.A.T.

"This is to certify that you have failed W.O.M.B.A.T. Grade 2 and have been awarded the classification of Troll. Although this was a difficult examination, it was quite an achievement for you to score zero. We are forced to conclude that you were either making a rebellious statement about the futility of formal education (in which case you are probably a member of a subversive goblin group), or that you were too busy attempting to eat the examination paper to notice the questions (in which case, you are a troll)."
— A letter sent to certify a Troll-graded W.O.M.B.A.T.[src]

Troll was one of the three failing grades, out of six grades overall, in the Ordinary Wizarding Levels,[1] Nastily Exhausting Wizarding Tests, and Wizards' Ordinary Magic and Basic Aptitude Tests.[2] It was the lowest mark, immediately below 'Dreadful'.[1]

It appeared to generally be reserved for those who received the worst score possible, usually through making an extra effort to fail.[2] There were no known recipients. Some people, including Hermione Granger, did not know it existed,[1] hinting that the grade was seldom attributed.


If a student was given a 'Troll' grade on their O.W.L. exam, they had failed that subject and were thus unable to continue with that class at N.E.W.T.-level. The same went for the other two failing grades: 'Poor' and 'Dreadful'.[1]

Recipients of a T

There were no known recipients of the grade.

Behind the scenes

Other grades

Exam grades
Passing grades Fail grades


Notes and references

  1. 1.0 1.1 1.2 1.3 Harry Potter and the Order of the Phoenix, Chapter 15 (The Hogwarts High Inquisitor)
  2. 2.0 2.1 J. K. Rowling's official site - W.O.M.B.A.T. results
  3. LEGO Harry Potter: Years 1-4