If what your really interested in 3d design the school of Gnomon would be great for you.
check out
http://www.gnomon3d.com, check out the school, thats the most serious of it all, it is pretty expensive though.
although its not a colledge you wont get better know how on 3d design anywhere else.
and high school computer classes arnt going to help you at all, and if for sure you want to do 3d work dont waste your time on c++ classes, and id learn maya, its the future
dont waste your time buying a 3d program to learn it, use the money to buy some tutorials or books, download maya off kazaa, it comes with some nice built in tutorials, ive nevetr tried to download 3dsmax but it should work.
math? you never use the type of math that you learn in high school in 3d programs, the 3d programs have their own language its a different kind of math, that you get better at judging over time, dont bother with math classes.
any1 can learn the program, you need the right kind of mind to do good artisticly in it.
have fun see u out there