So top grade's O for 'Outstanding,'" Hermione was saying, "and then there's A-" "No, E," George corrected her, "E for 'Exceeds Expectations.' And I've always thought Fred and I should've got E in everything, because we exceeded expectations just by turning up for the exams.
J. K. RowlingDo you remember me telling you we are practicing non-verbal spells, Potter?" "Yes," said Harry stiffly. "Yes, sir." "There's no need to call me "sir" Professor." The words had escaped him before he knew what he was saying.
J. K. Rowling