Don't worry about it, just teasing you ;)
Well, highschool in Germany used to go up to year 13, now they changed it to 12. You can actually quit school after finishing 10th grade and/or turning 16, after that you can start something like an apprenticeship. This means you apply directly to a concern or a company, and they teach you a job, which is pretty much hands-on and takes places both at the concern and at a special school. I guess this is something other countries don't exploit as much, in germany it's a pretty common thing to do.
If you do finish highschool though, you usually go to University, where you can study all the other stuff.
I'm sorry if i'm confusing you with this ^^