Applying corporate logic to education is a mistake. In Finland there are no private schools, and the education system is ranked among the highest in the world.
Source: http://www.theatlantic.com/national/archive/2011/12/what-ame...
Source: http://www.theatlantic.com/national/archive/2011/12/what-ame...
Actually, I'd be the second to say that. My Finnish colleagues would be first.
The R-value here is 0.
I suspect in both cases, it's an entirely different cause than the format of the school system that is responsible for the high results.