leadweight once bubbled...
Quite a few instructors are produced at schools in Florida where someone with an OW card shows up and 3 months later they leave as an instructor.
At that point they probably aren't any good, but that is what happens.
If they are lucky they will go to work for a dive shop somewhere who will make them assist more experienced instructors for 6 months or so. If they are really lucky the shop owner will be really picky and more or less retrain them.
Eventually, they will be fit to instruct.
Dont flip. I am not an instructor, but I consume their services. Students are quite qualified to rate the quality of their teachers.
Another aspect of this is that there is no (and correct me if I am wrong) basic educational requirement to become an instructor. I don't mean to say that a dive instructor needs a 4 year college degree to be effective, but something more than no minimum at all might be a good idea. I am hesitant to say what the standard should be, but in accord with many civil service jobs, military service would be an acceptable substitute for other formal education.