No, intelligence isn't taught at school, I don't see where I said that. But school does train your intelligence, stimulates it and teaches you things basically about everything. Now, if our school system sucks, how can it be that we are still the smartest people of Europe?
Oh and uhm, yes Hitler was asmart man, I kinda hoped you knew that, but appearantly you didn't. His war program didn't worked out as he had planned to, trust me I can go into detail about the second World War, considering it was one of my favourite items in History Class, but I won't. To make things short, Hitler was smart.
Also, it is very well possible to measure the intelligence of the country, of course it is not exact, it is just an average.
Oh and I actually took time to look it up:
Clicky
For those that don't want to click: Pool (poule): the grouping of fencers or teams in a competition...ooooh that must hurt.
Edit: Quite funny, it is a british site, Kone..?