For your second point, I have to say while the US has a formalized education system, the very concept of freedom of speech information is freely accesible and propogated outside of the education system, independent of government control. Compare this to China where the government has the final say on information on top of control of he education system. Also not everyone has to attend government schools in he US. So ultimately in the US you definitely have more freedoms in terms of doing what you want.
For the third paragraph, I am not talking about rule based on hereditary titles or class. In fact I am talking about the exact opposite. The US system promotes a smart business man to run a business because he will have the best practical results, and a smart person to run a state, presidency, etc. This is what I mean those fit to rule will rule. The democratic process naturally weeds out those who suck so that those deserving, by merit, will come out on top.
In terms of efficiency, the American system may not be that great, but it is stable, and this stability means any attempt to radically improve it's system will be tough since there is always the risk it could fail miserably. Democracy is the stage for when people are comfortable, and stability is needed.
Obviously the education system needs reform and more freedom, but I think democracy is heading in the right direction.