^^Yes. I get that OP loves math and seems more interested in learning than credits (and that’s what he’s asking about)but I would also encourage him to use some excess brain power on another subject. With perfect hindsight I really wish my kids had achieved true foreign language fluency in HS. It would have saved older D 4 semesters of a class she didn’t like. Many colleges have gen ed requirements in that area. D2 only had a 2 semester requirement and ended up taking Russian and loving it. Maybe some of you already know this, but when she started exploring grad programs, many PhD programs in math required proficiency in languages usually preferably Russian, German or French. So if OP even thinks PhD may be in his future, working on language may be helpful or at least save him time in college. D2 also took Greek. She liked it also. Think the fact that Greek and Russian had different alphabets appealed to her math brain and it was more like puzzle to decode. Obviously a long way off, but OP sounds like one smart kid.