I'd say anything above a 1800 would make you competitive for admission to USC. You'd probably get in with a lower score with your EC's and if you have a pretty high GPA. However, if you're GPA is average to USC's standards (let's say 3.3-3.5), it's really a toss-up. So I'd say try to get the highest SAT score possible...you have LOTS of time. Take the SAT's as many times as you like until you get a score which you're satisfied with. I really can't tell how qualified you are yet (1. You're still a sophomore, lots more time to improve/develop...plus, I don't know how you will do in your next two years of high school...you'll be pretty competitive if you continue this way 2. I don't know how competitive USC will get in two or three more years.) Other than that, I think with a good SAT score, you have a very good chance of getting into USC (My friend got into it with an average SAT score and around a 3.4/3.5 cumulative gpa...his essays and recommendations helped him, however).