What are my chances of getting to Phillips Exeter and Phillips Andover for 12th grade?

You mean MIT where the acceptance rate for international applicants is 2.4% versus the domestic acceptance rate of 7.9%? That MIT?
https://mitadmissions.org/apply/process/stats/

I have no personal gain in who applies or does not apply to Andover. I simply offer my perspective. Hopefully the OP can differentiate advice from those who have been through a few admissions cycles versus those who create an account a nanosecond before making a controversial post.