Thank you for your replies, guys!

I've been using it constantly for over seven years now, it's my favourite language for doing research and reading and I have a great linguistic memory; perhaps it's a small recompensation for my lack of other skills

It's very simple: There is only one type of exams you take here in order to go to uni. At the end of high school, you take a set of national tests (they are all the same in the whole country). The basics ones are your native language, Maths and English. Apart from that, you also can take some extended exams (Like I did, I passed quite well in my native language, took extended English, Philosophy and Biology).

If you don't pass any of the basic exams, you don't qualify for the university admissions and - what's more - if you won't get a positive grade (you can take it twice a year) in five years time, all of your grades from the other subjects are deleted from the system and you need to start the whole process again. There is not much help for the students with learning disabilities, they must take the exam in the same form as everyone else. Most of the time, people who don't pass basic exams in any of the subjects have poor educational skills in general. Still, going to university here is not something unusual, nearly everyone is or has been studying something. Due to the demographic decline, universities take everyone that was able to pass the basics. So often it's not like I feel I miss something very important.