Highschool is really more preparing you for stuff really. I always thought learning anything above basic applications in math, such as adding, subtraction, division, and multiplication, along with a few other things, were a waste of time (algebra, finding the .0008th degree of a quagasaurus triangle's ump-thousandth corner, stuff like that). I honestly believed anything else was a waste of them, until my last year's math teacher put it in a way that made me understand that no one else explained it:
Highschool is only for getting you ready, to get you famuilar with various things, that way, when you're ready to move up, and actually learn the things you'll need on a certain job, you'll be able to remember going through the steps without having to take weeks to learn it (though I learn things easily, couldn't really connect on that one).