Stanford Pre-collegiate Summer Institutes Chances + others

I am an incoming high school sophomore interested in attending the summer institutes at Stanford. What are the admission rates like? What are my chances? Also, what are sone other programs like Stanford if I don’t get accepeted?

Test Scores (guessing based on previous testing)
ACT: 26-29
SAT (new): 1400-1500

Transcript
GPA: 4.12 (weighted)
AP: European History, Physics
Advanced (my school offers selective advanced classes that aren’t AP, per se): Geometry, Algebra 2, English (2x), Anatomy and Physiology

Extracurriculars:
•Founded my own science related club
•100+ hours research experience (biology) at local university
•Science Olympaid
•JV tennis (Doubles league champion)
•20 hours volunteering at science summer program at local university
•Assistant coach for middle school Science Olympiad team

Again, I have only finished my freshman year so I am uncertain about some scores

Wow, your stats and extracurriculars look really great! I think you have a pretty good chance of being accepted to the Pre-Collegiate Institutes, but also consider applying to better/more prestigious camps.

You could get into more selective summer programs; Stanford’s Summer Institutes aren’t generally very selective.