I agree with Sharon, Gloria. Liam can be a house pet but you still want to train him and socialize him. I do believe that if you found the right place, it would be great for him. If you do explore other facilities, I would make it a point to go and watch their trainers and classes before you sign up. Ask questions about how they handle aggressive dogs and if they allow them in group classes. I do think Liam would benefit from some classes, whether they're Obedience or Rally and I'm sorry you'll lose money over this situation but I really think continuing where you are would be a setback to Liam's confidence that could be permanent. It's so important to listen to our dogs. When they tell us they're uncomfortable in a situation, there's a reason.