OK! Finally got through reading every single post in this thread! Whew!
I have been a certified instructor for many years. Of all the students I have taught, many had never touched a firearm before, and most had very little experience.
They very first thing I did with every class (after pointing out where the bathroom was!) was to determine each students "Level of Knowledge". That is straight from instructional methodology handbook! A lot of the folks responding to this thread have mentioned it with other words. It is still the same.
Having determined that this particular student was not only a complete novice, but was also a slow learner (understatement), the instructor should have proceeded much more slowly and deliberately.
There were several instructor errors made. The first was not conducting a proper practical assessment of what was learned in the classroom. Our students do not even enter the range until they demonstrate the ability to load, unload, and dry fire (with snap caps) while strictly adhering to the basic gun safety rules.
Then and only then are they allowed to go into the range with one on one instruction, which always starts with .22s.
Proficiency is measured by observing whether or not the student is applying all safety rules. Most importantly "Muzzle in a safe direction at all times" and "Finger off the trigger until on target." We proceed to .38s and then .45s if the student shows competency with the smaller calibers.
Most importantly, the instructor stands DIRECTLY to the side and slightly rearward of the student in such a way that the gun /hand can be grabbed if that muzzle starts to point anywhere but down range.
I have had some students that were incredibly hard to teach. I took my time with them, even to the point of returning to the range at a later date to provide private instruction on my own time.
I think that the student referred to in the opening post was an exceptionally difficult to teach student that needed a whole lot more training and more importantly, assessment, before moving up to the level at which this incident occurred.
It may be helpful for your instructor friend to read this thread.
I think every new shooter should be encouraged (not mandated) to seek proper firearm safety instruction.
WG840