I'm a UK student, born in Ukraine.
My stats: SAT 1540 essay 6/5/6
Subject Tests: Math 2:800 Physics: 740
Grades (UK has a different system) : A*A*A*A for Math, Further Math, Physics and Biology
Extra-curricular: School monitor (officially chosen for qualities, but really for commitment, sports, academia, and everything school-wise and also election); House monitor; Help younger years settling into school, Schools first team for cross country, academic scholarship in my school, done research project in physics (CREST SILVER), got golds in national challenges and main scientific writer for the school magazine, and some others. Do lots I'm school in subjects, so going to have very good recommendations, also I study in an independent public school.
Now to the question: in your opinion, what are my chances in admission at schools like Princeton, Harvard, Columbia, Cornell, etc?
If you have your experience of applying from UK system you can also share it here