That does not mean that a state mandated solution for those children is a good idea. The state has NO accountability for serving those children well and may in fact be the cause of their difficulties. A disproportionate population of homeschoolers are children with both developmental and behavioral learning disabilities. Sadly, the latter is all to often the RESULT of government educational malpractice. Parents pull those kids in order to save them.
If you think more money is the solution, remember that the only way the state can justify additional funding is failure to perform (in case you hadn't noticed). Average K-12 spending in California classrooms is nearing $10,000 per student per year (it was $9,200 in 2000). Considering the product of teachers' colleges these days, it will only get worse.
Then maybe he should check and see how those kids are doing compaired to other home schoolers. As long as a parent can read they can teach their children. By the time children are in the 7th grade they have begun to teach themselves. That is the reason that test scores are similar no matter what the parents education is. What they can't teach outside classes can usually be found, put on by those in the homeschool community. In highschool they can take advantage of local community collages recieving credit for high school and college at the same time.