I was taking ap calculus bc in 9th grade (calculus I). There were 2 other students in 9th grade with me. 6 were in 10th grade, many were juniors or seniors.
I left high school soon after 10th grade started so I don’t know what track I would have been on. But there are tons of overachievers taking on as much advanced stuff as possible in high school. So I think it’s a little unfair to say an advantages student only might be taking calculus I as a senior, because my personal experience and observations don’t suggest that.
On the other hand, what you are saying might have been true a long time ago. My wife’s father is a professional economist and he only took Calculus in college and he’s pretty smart. So I think education has improved in the US in that time.
I left high school soon after 10th grade started so I don’t know what track I would have been on. But there are tons of overachievers taking on as much advanced stuff as possible in high school. So I think it’s a little unfair to say an advantages student only might be taking calculus I as a senior, because my personal experience and observations don’t suggest that.
On the other hand, what you are saying might have been true a long time ago. My wife’s father is a professional economist and he only took Calculus in college and he’s pretty smart. So I think education has improved in the US in that time.