Well, there's been some time since you posted; I'm curious if you've had any private lessons yet? Any closer to a decision whether it's right for you or not? Did you find out if they spar?
I've been going to a Tracy's school in St. Louis, MO for two and a half years, and I've been pretty happy. My son, now eight, has been training with me that whole time. It's slowed my progress a bit, but I've gotten more out of the basics because of it.
Group classes are never really the forum for learning new moves; you probably should have gone to privates first. It's also in those private lessons where you can ask your instructor to work you harder, rather than with a less experienced, less controlled student.
When I first started, there wasn't really any sparring going on, which I think was merely because of lack of interest, but I can't say for sure. My instructor got a sparring class going, and I went to that. I was a bit disappointed at the "point-style" fighting, since it was more like tag than what I'd expected. The concern, I think, was our inexperience and lack of control (mixed with the desire to keep their insurance!). I made it known to other students I wanted them to hit me, that I was there to improve specific skills I could use in my fighting, and I wasn't interested in sport. I found one other student who was interested in the same thing I was; the rest were either too new or too scared about getting hit to enjoy it. So during sparring, I'd practice speed, control and accuracy, and afterwards, this guy and I would stick around and beat on each other, grinnin' the whole time.
Our instructor noticed how we were training together, and how, despite our vigorous poundings, neither of us lost control, and he started letting us work that in to the regular sparring class. Our instructor took the opportunity to work-in techniques and combos that he wouldn't have in a tournament-focused class, which made sparring more enjoyable for me, and worth something to the rest of the class too.
Point being, I guess, that if they're not doing it (sparring) now, doesn't mean you can't show them it's worth doing.