It is interesting. I've taught a lot of students. I've certified fewer than I taught. Not all of my students got certified, not all of them completed their classes. It isn't because they were f"n idiots, it's because I am. Sometimes I just can't get through to a student. I don't see that as a failure on their part, but as a failure on mine. Yes, I refund a student when I fail to teach them. Yes, I'll give them the whole year to get the class done. Yes, I'll hand the student off to another instructor to finish them, and try to learn from the process. Try to learn how to teach the skill I failed to teach. Why would I do this? Because if someone wants to learn to dive, I want them to have the best instruction possible. After all, diving is a dangerous sport, and new divers need to be prepared to face that danger. For any instructor to want something less than that for their student does a dis-service to the student, as well as a dis-service to the scuba industry as a whole. I really don't want to see Hotpuppy (or any other diver) on the Spree until he has shown MASTERY of the skills for the card he is presenting me. Anything less shows a lack of respect for those of us who try to make better divers.
Quoted because I think it bears repeating so others can see just the kind of training all students should get, and what all instructors should strive for