Maybe. If this court decision is allowed to stand, homeschooling will be illegal in the state of California.
Download the pdf of the court case here.
Consider this quotation from the case: "A primary purpose of the educational system is to train school children in good citizenship, patriotism and loyalty to the state and the nation as a means of protecting the public welfare."
Scary. Statism is alive and well in CA.
The Home School Legal Defense Association (HSLDA) has some information on this, too.