This is true for most other countries. When I went to school before college, Math was just Math. There wasn't a Calculus or Algebra or Statistics class. You took Math and just did all of it in the Math class over the years, and you couldn't pick and choose. The distinctions only start in College. So everyone who graduated high school at least knew what each of these were about, even if they flat out flunked Math. I can't say how useful that was though.