Some cool and educational tests

I'm bored and looking for some interesting tests to solve. I have already solved many political, personality and other tests, but I cannot find any test, e.g. testing the potential in learning specific subjects at school or specific development paths, or a test that, based on my character, will suggest to me which characters of given people will be the easiest for me to get along, etc. Do you have any to recommend?

Of course, I mean tests which result from which something comes, not quizes something like "what pizza are you? What kind of school subject are you?"