And I think this one is a good fit :) Had the induction chat today, and first class is on Wednesday night. When I expressed some concerns about Jas's fear aggression, the trainer said they'd see how he went, and might ask me to walk him around the edge of the field until he was used to the environment, the dogs and the people. I am taking this as a very good sign 
They also told me he isn't as bad as I think he is, as without me noticing he sniffed and greeted several dogs behind my legs 
So, all in all, I'm feeling a lot more relaxed. Plus, there is a great dane in our class called Dave that is the size of a donkey. I want to steal him