It all depends. I am a great driver (if I do say so myself) my mum says I am good my driving instructor said I was the best student he had ever had. I passed 1st time havent had a crash (touch wood) no scrapes or scratches. A mate crashed his car after about 2 weeks written off. Other mate hit a cyclist.

Statistically us young un's are more likely to crash so we get to pay for everyone elses crashes although some of us are good drivers.

A little bit of information- I was the only person I know who took an Adavanced Driving Course before I ever drove on my own.

So I reckon harder driving tests but that will still not work because you will get crap drivers getting through by luck and good drivers having a bad day.