Mr Harris is probably the most intellectual and knowledgeable person I know. The AP Calc course is challenging and fast-paced and the only reason how I coped with this was because of Mr Harris. His classes are extremely well-organized, in a way we don't even have to do heavy-duty studying the night before our AP exams. Mr Harris explains concepts remarkable and made me want to learn more. He is truly exceptional and he made the hardest course at LCS seem bearable. That should speak for itself.