Defense should have been another class like those two, Harry sensed, but the teacher made all the difference—Quirrell belonged in a therapist's office, not a classroom. The ghost teaching History of Magic was even worse—his class was used as a study hall at best and a dormitory at worst. Astronomy was held at midnight on the tallest tower; Hermione had been so busy remembering her telescope and textbooks that she forgot her cloak, and Harry had to lend her his. Herbology was basically high-stakes gardening; Hermione wasn't especially good at it, but Harry was, and during their fist class he'd discovered that Neville Longbottom was even better.