Well Czech very obviously wasn't dead before the national revival was it? And yes it is learned from the age of 3 (play school) to the age of 18/20 when you leave secondary school, you can also go on to study it in College. I think it is ridiculous to accuse other nations of being ignorant of the Czech Republic in particular when very few people in any country know about any small and unimportant nations like us. And we in turn know very little about each other. People make silly assumptions about countries they don't know anything about, just as you and many other Czech people I've met made silly assumptions about Ireland, it's perfectly natural and we shouldn't get annoyed, after all they have no reason to know anything about us.