SNorman:Do you think it's possible that some people are un-trainable? I have dove with a woman lately who actually had a lot of trouble passing the OW course. Yes, they *did* make her redo parts of it, with extra classes (so they did make an effort to train someone correctly who was having trouble). That and another experience lately makes me think some people (eh, in my case all women, but I know there are many exceptions ) just can't train themselves to NOT FREAK OUT!!!
Taking your long experience teaching diving and all the experience you actually have diving into consideration, I think you're the best qualified to answer your own question. Please Master Po, enlighten this unworthy one.