Evolution, but not revolution.
I have watched multiple videos (mostly on math) on the Khan Academy web site. And then I've noticed a pattern - while great, these videos are augmenting the old system. It's a great step by step explanation with great narrative and good visual supplement... of a very irrelevant concept. I'm not saying that math is irrelevant. But while watching one video in particular I heard the words like "This is the trick they use to prepare those kind of problems. When you see this kind of problem - do steps A, B, and C, and the problem will be solved".
This kind of explanation just shows that the problem presented to the student is completely artificial, irrelevant and has very little application in real life. It's a problem that has massaged numbers that only make sense in the context of a single lesson and that problem is only there so that students are presented with something. Something that they can use to "prove" their knowledge.
I still think this model of education is superior, however the content is still old. And while the new system uses old content - it's not solving the problem of education in general, as other TED speakers like Arthur Benjamin and Sir Ken Robinson have outlined in their talks.
Watching those videos I've re-lived my school experiences and realized, how little of what I was taught was really relevant to my personal and professional life.
It did benefit in some way or another, but it could be probably done in a much better way.