[tomjen3]

In the 1920s you didn't have email, but the post was delivered multiple times a day.

You didn't have telephone, but probably somebody nearby you could call and give a message.

You didn't have a freezer, but you had a butcher within walking distance.

And you didn't have a phone in your school, but you also didn't have retarded media that spread news that required.

Also you could probably have a gun on you, and if it was hunting season there would be plenty of guns in the parking lot to stop a school threat.