We look at this from the standpoint that the more parental involvement the better because too many teens end up driving in risky situations, even with graduated driving laws in many states.
It is important that parents enforce strict rules about driving: no nighttime driving, no driving around with friends in the car. These are the riskiest situations.
There are two things working against young drivers: inexperience and immaturity. To the extent that you can give teens more time to develop their driving skills and the judgment to counteract their lack of experience the better.
It would clearly help if the driving age were raised. But it never has gained any traction in most places to simply raise the age.