"Bing Gordon dropped a bombshell just before lunch when he proposed that we should work to drive the marginal cost of education to zero.
From an economic point of view, I would say the goal... is to figure out how to get education down to a marginal cost of zero. Somebody mentioned Oxford. I think the marginal cost for a student at Oxford is probably $250,000; at a U.S. university it's probably $90,000. That's what it costs per student. That's not what they charge. Public school, I think, they are trying to do it for $6-8000 per student. So, what if we had to get it to zero? We've seen technologies that get the marginal cost [of services] to zero, plus bandwidth.
This is not as crazy as it sounds. Knowledge is, as the economists say, a non-rival good. If I eat an apple, you cannot also eat that same apple; but if I learn something, there is no reason you cannot also learn that thing. Information goods lend themselves to being created, distributed and consumed on the web. It is not so different from music, or classified advertising, or news."
http://www.unionsquareventures.com/2009/05/hacking_education.html
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