@Proton2: Calculus is definitely mentioned in high school today.  I graduated in 2003 from High School and there were a lot of seniors taking Calculus, myself included.  It's not for every student, of course, and there are a lot of students who aren't ready for it, but it's there if you're able.  And even though I went to several high schools, the one I graduated from only had a graduating class of 100-ish, so it's not just the "big" high schools that offer it.