Really? In order to pass the test you have to pass the theory test which is just about knowing the rules of the road. Yes many experienced drivers wouldn't always pass it first time, especially when it has been a long time they got their license and laws have changed but you get it quite easily by just ready the "rulebook" and do trial tests at your driving schools until you pass tests. It is no different than passing any easy test as a student.

As for the practice, you get something like mandatory 20 to 30hours with an instructor. And most of it is just about applying the rules you already know by having passed the test above. It takes less than a handful of hours to master clutch and gearbox, same for parallel parking, rest is applying the priority rules and showing the instructor...and then the examiner that you apply them and give a quick look in all directions and your blind zone whenever you change lane or direction. It is more about feeling comfortable and confident on the car than learning really.