A couple of weeks ago I took a training course with the California Superbike School. Before arriving I had some apprehensions but they were quickly dismissed.
The level 1 course which I took covered throttle control, turn in points, fast turning rider input and riding lines. I have to admit that before the course I thought my riding was pretty good but during the interaction with my coach 'Hollywood' I was able to unlock a totally different level of riding. The overall effect was that I was more controlled and confident mid corner; the changes in turn in speed and turn in point also made a huge difference by increasing my confidence in the bike's ability to turn in fast.
I would seriously recommend the course to anyone who like me lives in the saddle. I haven't had any track time before but I think that might also be about to change.