In Australia, and a number of European countries, Calculus takes up the last two years of high school in the advanced stream (for anybody intending to go to university and take Law, Engineering, Medicine, Physics, Chem, etc).
Interestingly in serious university mathematics when looking at the foundations of mathematics, Linear Algebra is a functional prerequisite of multivariate calculus and anything higher dimensional as LA provides a literal basis for abstract spaces and local approximations to continuous functions, etc.
At the place I went, they designed the curriculum around students that came in without it. But I guess testing out gives room for a gen-ed.
I dunno. The vibe in high school’s hardest math class and college’s easiest math class is kinda different. Might be worth doing both, haha. Easy A, too.
Interestingly in serious university mathematics when looking at the foundations of mathematics, Linear Algebra is a functional prerequisite of multivariate calculus and anything higher dimensional as LA provides a literal basis for abstract spaces and local approximations to continuous functions, etc.
(Often the two are formally taught in parallel)