Chance me.

-State: California
-Gender: Male
-SAT: 1500 total (740 English, 760 Math, 18/24 Essay)
-SAT Subject Tests (Math2 800, Phy 760, Chem 740)
-Stanford Summer Session: three A GPA 4.0/4.0
-AP: BIO(4), CAL (5), CS (5)

Awards & activities:
-2017 AMC global top 1%
-Apple Worldwide Developer Conference (WWDC) Scholarship winner (300 in total globally)
-First Tech Challenge Robotic competition Inspirational award, regional champion
-iGEM (International Genetically Engineering Machine Competition) Silver award. Developed the next generation of medicine to treat heart diseases.
-State merit student award
-Two U.S patents
-Chief English host for school broadcast station
-Founded the Computer Programming Club at school.
-Member of school debating team and won awards in City debate competitions

Recommendations:
-I am having my AP Biology and AP Computer Science teacher writing my recommendation, I have given several lectures and review sessions for classmates.
-My third recommendation is from my school counselor, I have managed the computers in my school, and helped classmates develop apps to sell textbooks online.
-And I have an additional recommendation from the Biology professor in Stanford when I was in the Summer Session. I was active in her classes and actively participated in labs.

Course rigor:
By the end of high school, I will have taken 6 AP Classes and 10 honors classes. This is my course load for senior year:
-AP Literature
-AP Physics C
-AP Chemistry
-AP U.S History
-AP Environment Science
-AP Micro Economics

Volunteering:
-I volunteered at local news network company to maintain the database for a whole summer.
-I volunteer at the community Women & Children charity center.
-I volunteer at local Apple Store to give lectures.

Essays:
I am writing about using my computer skills to change the world, the Biology skills to develop medicines, and about combining all these two.

Intended Major: I applied to Cornell CAS as ED and Stanford REA. What are my chances?

Not an answer to your question, but you might want to know that Stanford says that you cannot apply to any other private schools early. This is from their website: “Applicants do not apply to any other private college/university under their Early Action, Restrictive Early Action, Early Decision or Early Notification program.”

Yeah @HumbleRobot is right. I don’t know what you should do but if either school finds out you applied to another private university ED or EA you could be in serious trouble. I would speak to your counselor ASAP

I have withdrawn the Stanford one already.

I have withdrawn the Stanford one already. Sorry!

I have withdrawn the Stanford one already. Sorry!

Your ECs are great, course load is adequate, GPA is fine, the SAT total is maybe your weak point, though 1500 is perfectly fine. I say you have a great shot. Good luck.