Stiles noticed the irritation right away and sat straighter because he so hadn’t meant to make Derek irritated. “You’re also a great teacher,” Stiles pointed out to Derek, “and a lot of students take the class because they like the way you teach.” It was the truth. Derek was hard on them but he was also fair. “And no one has gotten hurt yet with you… well majorly hurt. Cuts and scrapes don’t count. And I really didn’t need to know that about the Headmaster though maybe next time I see him I will ask him if he has a chocolate car in there.”