At a certain point, inability to hit a target becomes a safety issue.
Hoping that the class included that nugget of wisdom. That being said, being wildly inaccurate with a hunting rifle isn't usually a problem, especially if the sights are calibrated correctly. A handgun however, is pretty dangerous when you don't know how to aim it.
“Unable to hit the broad side of a barn” (American aphorism) isn’t a miss, it’s functional/cognitive inability to abide by safety rules.