my dad was in the nat'l guard in the late 50s. still has his papers showing he qualified with both rifle and pistol. that sufficed for his permit almost 50 years later.
i've been shooting since i was 5, i know safe gun handling, but i don't have any paper to prove it, other than i can put some holes in your target if you'd like.
another student showed up for the class i took. had never fired a gun. barely qualified (25 shots, 15 at 9 feet, 10 at 21 feet, at a 12x18 target, just have to hit the target). and in the eyes of the law, she's more qualified than my dad, who has been shooting for over 70 years. nuts.