<p>My S has had similar experience in our "average" public school system. He took ALGEBRA in elem school, AP Calculus in ninth grade. From there, it was community college math which he finished, but it was too hard to take upper division univ math at our one university in town because of his ECs and scheduling conflicts. I also was the taxi driver to get him to the next level and that is always not possible. I wished that he could have gone to an excellent prep school (we have only "so so" privates) where he would have run out of math options anyway. We made a decision with him between the full high school experience vs just focusing on an academic passion. So he returns to his elem school to teach enrichment math, is captain of two sports teams, active in student govt as is already accepted to his top ivy. For us, in a relatively small town, life is about choices. Might as well learn that early rather than later.</p>