O . W . L . s   G r a d e s
(Order of the Phoenix, Chapter 15, p.310-311, American Hardcover Ed.)

O - 'Outstanding'

E - 'Exceeds Expectations'

A - 'Acceptable'

P - 'Poor'

D - 'Dreadful'

T - 'Troll' (According to George Weasley)

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