Since trucking everyone into an auditorium simply to hear statements is thought about to be inefficient by numerous, the option method is generally embraced. Instead of relocating individuals, announcements are broadcast into every class.

To do this requires mounting a speaker in every space and also linking it to a sound source in the school office. When the source speaks, all college neighborhood participants hear the sound, making the speech a public address (which is exactly what the initials "" signify). This takes place each day at an assigned time, perhaps during homeroom, when everyone is ready to get the message despite the inability to enjoy the individual talking.

The public address system hence emulates the old technique of having town criers notify entire communities of essential details in the general public square. Rampant illiteracy was the main inspiration behind the practice in olden times, whereas convenience and also usefulness are the drivers these days. Nevertheless, the two settings appear like each other being used of auditory interaction (talking messages) instead of print media.