OP, if you are 14 now I strongly suggest repeating a year and starting in 10th at BS. BS is not all about academic pursuits and you are going to be so young if you start as an 11th grader compared to your classmates. I have posted about this before - I don’t think that’s good. Again, BS is about so so so much more than academics. Please really understand that.
You will be placed, math wise, wherever you test so you don’t need to be in 11th to take high level math. We have freshmen in Calc BC. Starting any school in 11th is kind of “too late” and I know several kids who did so and struggled to adjust. That’s a problem because 11th is an important year for your transcripts for college. That’s the academic reason to repeat 10th.