If this policy was alive here just a few short years ago when my boys were that age, they'd've likely been taken to re-education camps by now.
Toy guns, swords, knives, clubs, axes, bows... they ran around the neighborhood with one or the other every single day for more than a decade. They used to stage Airsoft wars, with more than a dozen kids, some with realistic body armor, real rifle scopes, walkie-talkies, etc. Some (my boys included) even had ghillie suits. They played so hard, they even worked on emulating "death-throes", screaming as realistically as they knew how; as if they were truly being killed.
God, how I wish the school would have tried to interfere. But fortunately for everyone, we don't live in a district like that. Not yet, anyway.