I'm skeptical about 'leveraging' videos from Khan Academy for a for-profit education system. Makes it sound half-baked.

Some selected public or private schools are already doing this, with great results from what little data I've seen. The feedback from the children themselves, at the very least, is impressive - the vast majority of them allegedly report (in less sciencey words) a vast improvement in their reasoning skills and their enthusiasm, motivation and enjoyment of mathematics, sciences, and studying in general.

Unfortunately, this is still on an extremely insignificantly small scale, with only a handful of teachers spread out over 4-6 schools doing this, some of them with direct collaboration from Khan Academy IIRC.