There are several recognised courses (this is a NZ government website)
passing can reduce the age at which you can drive...
In NZ you can start learning at 16, with a minimum of 6 months then as a learner (to 16.5) and then 18 months on a restricted licence (to 18)

doing an 'advanced' course can reduce your time before the full licence.
Interesting to see a slightly more structured approach than we have - but also to start putting some concept of advanced driving - also referred to as defensive driving, the course can include:
This course helps you develop:
- advanced driving skills
- better control
- hazard identification
- the ability to make the right decisions
- the ability to manage risk
Alasdair