what are some cool things to study at high school and what careers are there for them?

Answer 1

First write down ALL your interests on a piece of paper. That's will clarify alot of things for you. It cuts down on a bunch of mindless idea grabbing.

Answer 2

My son studied things like trig, calculus, and one I forget. These may be outdated now, but you can become an environmentalist and other opportunities along this line.