always encourage them to take more classes and read
What is it you think they need or what will be imparted through the "more classes?"
One thing I used to tell new employees who worked under me was .. "I can teach you things you may not currently have the skills or knowledge of but I cant and wont teach you the things your mom or dad should have"
I have yet to see a class offered in any school that teaches common sense. I wish there were but I have seen many a course curriculum and never spotted it.
How do you see an assessment of "common sense necessary to own a firearm" playing out. What is the evaluation procedure and who makes the determination?
Are the classes supposed to teach better accuracy, gun handling, gun law, when is a gun in self defense justified by law what are the consequences of using a gun in a violent encounter?
If you are in AZ for any length of time then you know we had a CCW course. You didn't need it to OWN a gun but you did need it to carry concealed. When I came out here it was a requirement and I and my wife took the course. It was some 8 hours or more.
Except for gathering our fingerprints ... very little actual knowledge was transferred.
If the people you are referring to are friends of yours .. and I have a very very small circle of people I associate with and would choose not to communicate with people who lack common sense then ... buy them a copy of this
The Arizona Gun Owners Guide by Alan Korwin
I still have my copy from 15 or so years ago.