[spiritwings1202]

first of all how old is she?
It just might be that the class with all those dogs and children and people is just to overwhelming.
You can socialize her other ways than a class....
I did not go to obediance classes with Pixie bc they wanted to have big and small dogs together and free play and I felt that Pixie was too small to be in that kind of situation.
I socialized Pixie by taking her to the park and letting children come and pet her and walking her around dogs and other people.
Pixie is very well adjusted she loves children and people and other dogs.

Your dog just might feel overwhelmed and I would not keep her in that enviornment bc it will encourage the bad behavior.
This is just my opinion. I hope I helped.