The three I took this last term, were all groups. All group work. And in my Deaf Culture class...I was the only one in the group who knew ASL. (ASL not required for the class).
The teacher used English, but he also signed. (He is deaf) But his English has a heavy Jamaican accent. He went deaf at 14.. so, I mainly watched his signing to understand the glass. Not sure how the others managed.