Well what a meanie!
I'd be tempted to find a new puppy class, I believe.
When I took my female cavalier to her puppy class, the teacher said, "Oh, I see we have a
princess with us in this class, all we need is a pillow." I felt the same way you do...shocked, embarassed and miffed! (Although, she was right, Emma IS a princess who's main goal is to laze around on a pillow all day
; I, however, did not know that at the time.)
Maybe she was just jealous, 'cause I can see from your pic that he's absolutely adorable! And we all know these yorkies are smart!