It kind of is through algebra, from there moving onto differential calculus. They touch on financial math briefly in 12th grade as well.Finance really should be taught throughout elementary and high school. Why isn't it?
The curriculum needs and overhaul.
The issue is most students aside from the ones who get how important it is for finance don't realize it until their twenties and are facing first year math courses without adequate outside prep.
I personally think high school kids should have a mandatory summer preparatory class or session months before they enter university. I also think they should make math mandatory for all four years like English is.
There's such a vast disconnect with many students with where they are academically versus where they need to be for university. I tutor math kids in high school and sometimes it's unfortunate how quick they need to mature academically from 16-17 to 18.