What if my school doesn't offer AP?
My school doesn't offer IB or AP, and there are only advanced calculus, photography, biology, and chemistry that you can take in senior year. Does this mean that I have no chance getting into a selective college?
You can visit eDx.org and take self-paced AP courses taught by top universities. Most are free to audit but if you want a certificate of completion you need to pay between $49 to $169 per class. Some AP courses are 2 parts like AP Physics 1 and AP Physics 2. You should research all the ones you want to take first and then have a quick talk with your college counselor if they are helpful. Otherwise just self study these yourself and sign up for the AP exams on college board.org. You will have to travel to take the test next year outside your zip code unless they are doing the take-home exam again. Good luck.
So your HS should send a pamphlet to the selective school saying these classes are offered. Then the school evaluates you in regards to your opportunities. As such gpa is much more important in admissions.
Also you can take AP tests online but don’t over do it. While ivies are likely harder to gain admit to it is still feasible. A selective school such as Penn St with a sub 50% admit rate that is very doable