What if everyone went to the best schools?

Woman working online
A woman works online in her cubicle at an office in Beijing on February 4, 2010.
FREDERIC J. BROWN/AFP/Getty Images

A documentary from the BBC World Service asks: "What would it would mean if we could all go to Stanford, or Harvard, or Oxford and Cambridge?" The documentary explores the rise in massive on-line courses and contemplates the implications for education around the world.