[I Love Bailey]

Bailey had a wonderful trainer at Petsmart. We have taken the class a couple of times before I got Angel for socialization.
The first few classes the first time Bailey was very shy around other dogs and sat under my chair. She had a Great Dane friend at her last class, it was a riot a 100lb+ dog and Bailey barely 5 lbs. He had a huge crush on Bailey and was very protective of her. Bailey learned a couple of tricks and she stays unless released.
Our trainer said I could bring both girls in at no charge whenever I wanted.
I would recommend PetSmart. It does depend on the trainer. You can meet the trainers before the class starts to see which one you are more comfortable with.