One easy way to do this would be if your actions in life have shown responsibility as this often increases the responsibility on the road.
Most Insurers offer a discount for good driving, so make sure to check.
One suggestion is do good in school.
If you get a good grade average (B or higher) then you will get cheaper insurance as you will most likely be more responsible than someone with a middle to low grade average (C to D).
This also shows you cope better under stressful conditions which will help on the road.
To help reduce the rate further, you should consider taking a defensive driving class/course.
This cause teaches people how to be cautious drivers and helps you learn to not have accidents.
This shows to the insurer you want to be safe on the road.
Again most insurers offer this type of thing but not all.
A simple way is to not get a brand new car, as these will be more costly to replace compared to a car that is a couple of years old.
Insurers are aware that teenagers often crash cars, thus damaging them partially or fully.
If the car is featured with safety aspects such as airbags and alarms, which are fairly common on cars nowadays, this might also be a contributing factor to your auto policy.
Lastly, if you get a fast car, these commonly cause you to drive faster.
Teenagers are quite inexperienced and will sometimes completely ignore speed limits and such when behind the wheel of a sports car.
Insurers have often dealt with this before so they usually raise prices further to avoid as much of a sting when a claim is made.
Choose a sensible make and model car.
If you want to know what would be best go to a insurer and simply ask stating the make and model of some cars you are considering what the price differences are.