Please help me!

Hey everyone, I know these are annoying but any advice on how to improve myself would be highly appreciated.

Gender: F
Age: 17, (Junior)
State: Wisconsin

GPA: 3.9 (My school doesn’t offer unweighted GPAs, but I’m in AP Literature (A), AP Biology (A) and AP Psychology (5))

ACT Composite: 31

SAT: Haven’t taken, should I?

EC’s: I’m only a junior but all leadership positions are current and I will be continuing each club next year.

Key Club (3 years, over 320 hours)
NHS (1 years, one year as President)
Environmental Club (3 years)
Latin Club (3 years, 2 years as President)
Feminism club (2 years)
Ronald McDonald House Volunteer (Over 150 hours)
Varsity Cross Country Athlete w/ Varsity Scholar Honors (9th and 10th grade)
Mu Alpha Theta (3 years)

If there is anything else you would like to know, please tell me! Any advice is appreciated.

http://ucomm.stanford.edu/cds/2014#admission
Your ACT is at the 25th percentile for Stanford; I’d get that up.