The problem with this way is that calculus is needed to get through, like, a basic engineering degree, I assume economics if you are doing it with any rigor. I suspect these aren't like careers for the top 1% braniac kids, they are normal B+ student fields (I mean I know everyone gets straight A's in highschool now, but you know what I mean).

Do you want to tell a parent that their kid has already decided not to design rockets?

Colleges attract big fish from small ponds, but most small ponds have small fish. Realistically, only big fish will have the attitude and aptitude to become something as advanced as rocket designer.

Yes, but do you want to convince a delusional parent of that? I sure don't. At best it would be a thankless, difficult, and messy task.