Let me put in a good word in defense of instructors, especially for those who are not present to speak for themselves. I refer to all of them, commercial, police, military and your friends at the range.
Some will for sure be better than others--at teaching. Teaching is an art apart from their skill in the subject being taught. And like everyone else, they have limited resources to work with. Even at a top school like gunsite, they don't pick their students, or at least I assume not. The students show up with whatever abilities they were given and still retain at that moment in their life. And like it or not, not everyone has equal ability, so we can presume not everyone is going to be equally trained. They may go through the same course but not everyone is going to get an A+.
Shoot low, sheriff. They're riding Shetlands!
Underneath the starry flag, civilize 'em with a Krag,
and return us to our own beloved homes!
Buy War Bonds.