Have you taken your California skills & knowledge test yet? Our California drivers ed course will get you ready and get you the Certificate Of Completion you need to take your DMV skills & knowledge test. Just need your 6 hours of behind the wheel training? Then sign up with GNC Driving School and get going. Don't forget to log your 50 hours of practice with your 21 year old or older guardian before your DMV driving test. Best to make an appointment at the DMV.