I would highly recommend checking out Next Door Driving since it worked out great for my family last year. It is 100% DMV-authorized so it covers the full 30-hour requirement you need before hitting the DMV for the written test. What we liked best was that it is completely online and my kid could just jump on his phone whenever he had a free hour. It is super straightforward and takes the stress out of the paperwork. If you want to see the full curriculum or how the certificate process works you can find more about California online here. It is definitely a solid hassle-free option for busy parents. Good luck with the permit stage!