Oh. Arithmancy.

Sarah may have gotten an E in the subject for her OWLS, but when you compared that to the O's she got for every other subject she took....it was bad. In her brain anyway. Numbers were not, and never had been, her friend. So it was with a heavy heart she made her way into the classroom for the first lesson of term.

"Hello, Professor," she smiled, as she took her seat near the back. Less chance of her having to answer a question if the teacher couldn't see her. Heh.