I recall in CA, at 15-1/2 I qualified for learner-permit after passing driving class at school. This allowed me to drive during daytime with parents or adult over... 25 I think.
Then at 16, I could take regular driving-test and get regular license. I recall at time that it was all stupidly easily and thinking half these kids shouldn't be allowed on roads!
Then again, I had been riding dirt-bikes and driving off-road since I was 10.