"You'd know if you came to class on time. Have you tried setting your watch an hour fast?"

Still, judging by the uniform they were housemates (lucky him), and he'd really rather not lose points for Wheeler's mistakes. He carefully folded his notebook to show the pristine notes he'd taken, with wand directions marked by a diagram with arrows and the incantation clearly written.

He pointed at it with a pencil. "Sense Magic."