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One of my neighbors used to have a second job at the local outlet of a major national retailer. I won’t mention who it was, but, when I was growing up on Pine View Farm, the arrival of its catalog, twice a year for the big catalog and then in the fall for the Christmas catalog, were Big Events.
She was required either to carry no purse of to carry a see-through purse. She had this little clear plastic purse she used only when she was going to her second job.
The school systems are taking the cue.
(Aside: When I was in school, we had book bags. Later on, when attache cases became fashionable, we had attache cases. Same difference. And none of us, not even the baddest kids–and we had some pretty bad kids–would have thought of bringing a firearm to school. Fists were enough.)
If students walking between classes want to use a backpack, it must be made of clear plastic or mesh so its contents can be seen at a glance. Cloth backpacks can be carried into the school in the morning but must be stored in lockers.