Oh, now I see why you send me the link. So basically you have to choose one of those 3 boards? Well, it kinda resembles our high school system. Like I mentioned, in high school we must choose one of 4 profiles, we have: social studies based more on things like geography, history etc and from 10th grade, the ones who are in this profile, don't study math anymore; philology profile, like the name said it's based on language skills, and also like social studies, the math or the other math oriented subjects are abandoned at some point; mathematics just very much math oriented, but the other language oriented subjects (like english, literature) aren't abandoned, those subject continue to be studied but in a fewer hours per week; and finally, the profile choosed by me: nature science, don't be fooled by name, it's basically the same as math profile only less hardcore since it has less math xD it's practically the most equilibrated profile in my opinion, like a "Jack of all Trades"
My personal opinion about this....I think this kind of system is ok as it let choose whatever you feel like doing or whatever you think it's better for your future career since some profiles/boards are more focused on something than the others. Sure, it can be confusing since there are so many options and you must think "did I make the right call?", but it's ok if you really know what you really want. Like, if someone wants to be a teacher then he/she would go to the language oriented profile, if someone wants to be an engineer then it would choose the math oriented one. If not, one can go with the safe options, like i did ^^
*final of part 1, the text was initially to long so I divided in two parts xDD*