HARRY POTTER QUIZ
An O.W.L. (Ordinary Wizarding Level) is a subject-specific test taken during Hogwarts students' fifth year, administrated by the Wizarding Examinations Authority. The score made by a student on a particular O.W.L. determines whether or not he or she will be allowed to continue taking that subject in subsequent school years.
Dolores Umbridge: "Ordinary. Wizarding. Level. Examinations. More commonly known as O.W.L.'s. Study hard and you will be rewarded. Fail to do so and the consequences may be... severe."