With some early adopters (institutional) already signed up, it is yet to be seen how this model of education can penetrate the US school districts and maneuver the accompanying silos and bureaucracy.

FORBES: Khan Academy: Audacious Startups Part II

Institutional affiliation is also a factor -- a study from his lab found that Berkeley students tended to like their school colors, blue and gold, more than their rival school Stanford's colors, red and white.

CNN: Is 'red' the same to all creatures?

One can only wonder how much faster progress on tax reform or school choice would have been if the political capital devoted to income inequality had been devoted to fighting entrenched institutional resistance to useful reforms.

WSJ: Jenkins: The Inequality Obsession