Is Home Schooling a Challenge to Public Schools?

Home schooling is now legal in all 50 states, an increasing challenge to what's called "the monopoly" of public schools.  Do home-schooled kids get the education they need in a high-tech society?  Does home schooling mean religious and ethnic isolation in a diverse democracy?  Plus, another attempt to rally the American public on Iraq, and a look at California's new law against global warming and Arnold Schwarzenegger's challenge to President Bush.