Well, I'm only a sophomore, but here's my stats as of now:
SAT: (I did an online practice test on the collegeboard website, full-length, computer graded essay) - 2190
Classes: Not doing IB, which is offered at my school, but will have taken a total of 12 AP classes by the end of senior year.
Class Rank: Right now, top 14% at an extremely competitive public school
ECs: By the end of senior year - 12 years of piano, with regional/local awards, 9 years of cello, 7 years of orchestra (top orchestra at my high school with a large program), 4 years of debate (including 3 summer institutes for a total of 10-11 weeks of summer institutes), and some volunteering