The home-school movement is expanding rapidly. No one knows how many home-schooled children there are in the United States, but one U.S. government estimate was 1.5 million as of 2008. Another organization puts it at 2.1 million in 2010. This is a large market. It is growing. There is no reason to think that it will shrink.
The rights of parents to home school vary, state to state. It is still a battle, but there is little possibility in the future that the United States will ever impose what Europe has: a system of state-run schools in which home schooling is illegal.
We see a growing market. We also see information-delivery costs at zero: YouTube, WordPress.com, Blogger.com, and PDFs. We would expect to see a large number of videos and curriculum strategies on-line. But we don’t.