Water logic

So, there I was at the local swimming pool, signing our daughter up for classes, and I had to choose between "Happy" and "Starter". Well, I said, she's never had any lessons, but she's reasonably confident in the water. So then, I'm told, she should do the "Happy" classes. When I query this and suggest that perhaps she should do the beginners' class, I'm told that "Happy" is the beginners' class, and "Starter", er, isn't. I was a bit doubtful, but there on the wall was the evidence...