I plan on doing something like this for my kids as they get older. I already randomly watch open courseware type stuff offered from various universities and I've always noticed they have decent seeming English and Math sections too. So why not sit my kids in front of it too?

I don't think anyone is really happy with public schools these days. I object because of a Christian background. Yet my non-church going (atheist?) in-laws asked me once about "non-religious" based home school programs for their kids since they knew I would be home schooling. I really had no idea what to tell them.