The math I took in high school was so advanced that I knew the first 3 math courses I took for my Chemical Engineering major. I also got a 800 in my Math SAT. The only problem was that I did not do high school here, I did it in Dubai. The school there was hell academically, had 4 scheduled quizzes and 3 exams weekly and that really kept you on your toes. It was a school that catered to foreigners living there.
What was your score on the writing section?