If it is a class for beginners, I'd imagine you will be fine. Those classes are designed partly for community outreach and business development at the velodrome near me. From the website: "All you need is a moderate sense of balance and your own helmet. That’s all it takes. It’s just like riding a bike. 😉"
I have done a good bit of group riding and some road races, and, having just viewed track riding, I dont see a lot of crossover. I would want to be in a beginner class if I were to try the track out as well.