Arithmancy (class)

Arithmancy is an elective subject offered from the third year on at Hogwarts School of Witchcraft and Wizardry. During the 1990s at least, the class was taught by Professor Septima Vector in Classroom 7A on Hogwarts castle's seventh floor.

Little is known about the class, but the study of Arithmancy has been described as "predicting the future using numbers," with "bit of numerology" as well.

Class information
Homework assignments, which includes writing essays, requires the consulation and/or composition of complicated number charts.

Arithmancy was Hermione Granger's favorite subject at Hogwarts. She once told Harry Potter it was "wonderful" when he remakred that her challenging homework looked "terrible." However, one of her roommates said that, in her opinion, it was difficult and, by far, prefered Care of Magical Creatures.

Another subject, Advanced Arithmancy Studies, was taught at Hogwarts, presumably to the most intelligent and brilliant students. It may have been taught by Professor Vector also, and the Advanced Arithmancy Studies classroom was located on the first floor of the Hogwarts Turris Magnus in Hogwarts Castle.

An O.W.L. in the subject is necessary to apply for a Curse-Breaker position at Gringotts Wizarding Bank.

Required textbooks

 * Numerology and Grammatica

Known Professors

 * Septima Vector

Pass

 * Outstanding [O]
 * Exceeds Expectations [E]
 * Acceptable [A]

Fail

 * Poor [P]
 * Dreadful [D]
 * Troll [T]

Known O.W.L.s

 * Barty Crouch, Jr.
 * Bill Weasley
 * Bridget Wenlock (presumably)
 * Hermione Granger
 * Percy Weasley
 * Septima Vector