I thought it was only French that was like this. But the English I learned in school wasn't anymore representative of the British-English (try watching 'Skins'

I thought it was only French that was like this. But the English I learned in school wasn't anymore representative of the British-English (try watching 'Skins' or The Office or Extras) or Australian English (took me some time...). And then even in the US. After years of watching American shows without subtitles, first time I read 'to kill a mockingbird' or 'catcher in the rye' was a shock. So much vocabulary I didn't know... And it was only high-school level English!