The Internet will save higher education, but it may kill your alma mater.

Why do men outperform women on the SAT? The SAT's supposed to predict college grades. Women do better in high school and they do better in college. What's the problem here? Ah, the more you use, the more you start accepting that the SAT's coachable, the more problems you have with it.

Almost everyone who has claimed to know what kids need to learn or how they learn has turned out to be wrong.

The thing about startups is you can make it, and if it's wrong you can remake it, and you can build a team that you want to have, a product that you want to have. You're utterly focused on your users or your customers and their needs, and trying to figure out how to meet those needs.

No two children learn in the same way. While we might agree that every American eight-year-old should be able to read and multiply, beyond those basics, there are few reasons to make every student follow the same path.

Traditionally, universities have seen size as potentially dilutive to quality. If you doubled the size of campus and faculty, most would argue that you would make it a less compelling school. However, online schools will be as good as their classroom peers only if they are large enough to afford a substantial and ongoing investment.

I think a good entrepreneur has a very clear grasp of what the goal is, an unwavering sense of the goal, an utterly agile approach of getting there.