I highly recommend the CHP/Motorcycle Safety test that jpinpb and esmith have mentioned. In it they teach you emergency maneuvers, like sudden turns , what to do when the brakes lock, and so on. The instructors actually have you lock up the brakes.
They teach you important stuff like when you lock up the REAR brake, you SHOULD NOT unlock it because it can whip you right off the bike. If you lock up the front brake, you should release it. They will also teach you the very important evasive technique of counter-steering which is counter-intuitive for most people.
