I wouldn't say its worthless at all... I'm a pretty fast street rider and read a ton, so I was already decent and had lots of knowledge but I still found the class informative and very worthwhile, besides being faster than everyone is fun for a change. But I'm the type to think it better to be a big fish in a small pond and ride a little under your ability, than to end up riding over your head in a group that is too fast. Plus doing a beginner school will do alot to boost your confidence and you'll be able to relax and work on your skills, if you just jump in with a fast group that all know what they are doing your just going to be hanging on to them for dear life trying not to crash, and you really won't learn much that way and it probably won't be as enjoyable. Besides if your too fast for the beginner group you'll just get bumped up to intermediate the next session. Plus even if your faster through the curves than everyone because you've been riding on the street for 20 years, you still need to learn track ediquite(sp?), they cover this briefly in the rider meeting but thats another important part of a beginner school is learning the flags, and how to act when being passed or passing, how to enter/exit the pits and stuff like that.

TPM stands for Team Pro Motion. I've never done a day with them, so I can't say from personal experience but the general consensus from online discussion boards is they way overbook their track days and have too many people out on the track, but I have plenty of friends that ride with them and love it. Their membership fee is more expensive than most, but their track days are cheaper so it works out if you do more than two days.