The Question here is not about who is the ‘Best’ in the world. And the phrase “world” is often misleading and it more often pretains to only a small continent called north America.
If Americans feel proud of their education system, then why are they feeling worrid about Indian education? Its only an acceptance that education is deteriorating in USA. You cannot always say that my fore father had a mansion so I am great. The world is changed and the world order is changing. Go with it rather than complaining. If USA education needs improvement, do it and compete with others rather than preaching that Americans are great!! That closes the room for expansion.
Yesterday America was great and today India or China is becoming great.