I did the prodrive thing also when I was 15, was fun and actually learnt something. Had a paddock car from when I was 12, manual rwd so learnt alot of basic car control doing stupid stuff in a paddock. Paddock had seen better days when I was done with it. ;D
+1 on the whole compulsory driver training / experience.
But I also feel alot of middle aged drivers need to be forced to revise the road rules if they want to keep driving, even just having to sit the learners test again because I'm certain many would epically fail! One example that annoys me and I see almost everyday is people not keeping to their own lane when turning onto a multi-laned road.