My experience of one of these raceway classes wasn't positive. They billed it as "Cornering and Braking". It was heavily race-oriented, and my ST13 was completely unsuited to their purpose. When by 3:00 pm, with an hour left, I pointed out there still hadn't been any braking tuition, they did a session of straight-line emergency reaction braking (which the ST killed, with its ABS). For my $300 I got about 94 km of track riding. Add $75 for the leathers I had to rent to be allowed on the track.
Go for the Stay Upright or HART courses. Similar money, but aimed directly at road riding, not track.