I'm having the exact problem that you're describing. I want to study computer science in a university here in Greece but to do that I have to give exams in subjects that are irrelevant to a computer science curriculum (anatomy,biology etc.) because in High School I was in a "medical" department. So now because I don't want to spend a year of my life studying those courses I can't study computer science in a university and I became autodidact , which is very challenging so far...