My middle school had a mix of old alarms, don’t remember exactly what model but there were almost always remote strobes in rooms. The second year I was there, they redid the system and added ceiling mounted horn strobes in every room. I don’t remember the model exactly, might have been some sort of Simplex alarm? Pretty sure it had a voice evac option but the school didn’t enable it. In one of the three gyms, however, there was a dual horn Simplex/IBM 4030! Thank goodness I was never in that gym for a fire drill. They didn’t remove it in the system rework, however, which was strange.
My junior high school had ceiling mounted Gentex Commander 3 horn strobes in every. single. room. Annoying as hell. Even in very small offices. My high school now has a combination of wall mounted Exceder horn strobes in the rooms of the newer buildings and in the older buildings there are Wheelock AS horn strobes in the hallways and remote strobes in the classrooms, but has horn strobes in bigger rooms like the concert band room.
Hopefully we don’t get a fire drill when I’m in a room with an AS horn strobe, heard those things are deafeningly loud!