In my country (and I'd say this happens in some other EU countries), you do a ton of basic algebra as a kid, then take some rushed calculus and linear algebra 1

In my country (and I'd say this happens in some other EU countries), you do a ton of basic algebra as a kid, then take some rushed calculus and linear algebra 1-2 years before uni. Once you pretend you have mastered the basics, there is a sudden, strange focus on advanced Calculus heuristics and obscure linear algebra techniques, effectively making most people hate these subjects. The way you are taught the stuff is basically a crime against Mathematics since it drives talented people away from STEM careers.