Brainwash

You may say if compulsory education is the prerequisite of a successful democratic system, why doesn't it work in some strong country (which, on paper, offers 9 years of free compulsory education to all children).

Alas, that certainly depends on what you teach - or how you brainwash the youngsters. If Nazism were a compulsory subject and the only social system that we teach our children, we can easily turn them to followers of Adolf Hitler. If the textbook is changed to one on militarism, the children would turn to Hideki Tojo.

For obvious reasons, you could argue democracy - like communism - is merely a subject that westerners use to brainwash their own students. Well, yes, that's possible. However, I dare say when no particular political system is advocated in the school, democracy would be the natural tendency.

PS. To be fair to this strong country, her education system was once almost successful in introducing democracy - during the year with an exceptionally long May.