I don't have any first hand experience with Tac Pro but after doing a google search and looking at a few pictures of their training they seem to have a pretty good grasp of the subject and their students seem to have the basics of platform. That's a good sign. Most of the time the students are all out of shape. Just about anyone can teach trigger control and loading.
If this is your first real class I think you will learn a lot and have a good time. Call ahead and talk to the instructor and see if you mesh. No sense in taking a class if you can't work or learn from the guy teaching it. Ask if him what you can expect to learn, what gear you need and now much movement there is in class.