How do you know they don't have this problem? In India and China, literacy rates are lower than in the US, and a much smaller percentage graduate secondary school (or even go to secondary school). The kids who can't sit still or study effectively probably don't stay in school. Plus, have you ever heard firsthand accounts of Chinese or Indian school curricula? It's a bunch of rote memorization and math drills. The American curriculum at least tries to encourage independent thought and creativity.