<p>What caiacs said. Your AP classes help you, but they are at the level of intro level courses in college, so they’re certainly not a substitute for the other few years. I think four years are given for additional exploration, but 3 years suffice to complete most majors with a decent grip on what’s going on. To do 2, you basically have to cram like crazy. I hinted, and do believe, that 1 is not possible.</p>
<p>Further, I actually think it’s a bit of a pity to spend any less than 3 years here, unless you’re a transfer student who’s completed a lot of work earlier at another school.</p>