Covers a lot of the stuff in the beginner course except the stuff you would have learned in a couple thousand miles experience like: what switches/levers/buttons do what, how to use a clutch, how to shift, etc.
Still covers street strategy, some riding techniques like braking properly, counter steering drills etc.
If you took the basic course it's all rehash. Still a good idea to freshen up a bit. I took it after a couple years of riding and having taken the beginner course but it was free in Illinois. Should get a discount on insurance from it.
How much is it up there??