You are correct in that I did not specify what the actual problem is. There is a problem of perception, which the transparent bag policy will at least partly address, at relatively little cost. The problem of perception is almost certainly more troublesome than the reality in the majority of cases - the exceptions being notable - and while transparent bags may not be an effective deterrent, that doesn't mean they don't serve as one at all. There is also, in this case, a very real and well-known problem in American schools, including multiple guns confiscated and at least one credible threat in the past semester at this particular school.

I too kind of roll my eyes at the bag policy but it's at least an acknowledgement that something needs to be done about the problem - more than we've gotten from our politicians in the past two decades.