[SiVal]

In California, it's very expensive and difficult. You can homeschool your own children subject to oversight and regulation, but if you want to offer schooling to children who aren't your own, the regulatory burden increases so much that you have to hire full-time staff to handle it, get specially zoned and inspected real estate, and numerous other things that effectively require you to charge a very high tuition and serve only the children of the relatively wealthy.