I wouldn't recommend a gap year. Yea, school may suck, but you're in the routine. Taking a gap year may just make it even harder to get back into the school routine for when you go to to college, and may affect your performance because of it. You don't need to know what you want to do when you go to college. In fact, I'd recommend for your first semester to just take the intro courses for any and every subject that interests you. Half of the requirements for most college majors are general requirements anyways, so you can knock those out for the first 2-3 years before even doing your major classes if you want.

The best way in my opinion is to take intro courses for every subject that even slightly interests you in college and go from there.