After having some less than satisfactory experiences at quilt classes, I've learned a few things.
First of all I ask lots of questions and examine class samples to see if this really anything I want to learn. I request a supply list and if there are too many specialized items that I will have to buy I think harder about the class.
For me, I don't take too many classes because I find it discouraging to start a wonderful project, take it home and not finish it for months because of other pending projects that have to get done. (like for Christmas!)
Regardless, I'm sorry you had a disappointing class and hope it represents a minority of quilt classes.