I have very mixed feelings about the licence tests... Many of them I golded on my first try, but there are probably just as many that made me rage.
I think the times are set too easy. If a halfway decent player like me (mid A DR in Sport) can achieve gold by more than a whole second in just one sector consisting of a handful of corners, that's BS. A second difference over a 2 minute lap is enough to split drivers into two skill groups.
I think the difficulty I've had in the tests are down to the slidey, zero warning, instant death RWD physics of the game. S-10 in particular, you just don't know where water collects, which areas of the track to avoid, until you've aquaplaned and spun. So far that's the only test I've yet to Gold, nor do I think I ever will without a physics patch. I have NO IDEA how to keep the car from spinning on the mild left hander leading into Blanchimont. I could limp in there with near zero throttle and steering and I'd instant die.
Thing is, from the fierce arguments in the physics thread, many people are defending this, saying its good or even realistic. I have no idea if it is. Point being that the time targets for licence tests are woeful, but the tests can be hard for the wrong reasons. You basically need to have friends playing whom you know can set attainable goals to push for better times.