My father’s school is set up like this:
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Simplex 9422s in the hallways of the school
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The newer SpaceAge Electronics alarms in each of the rooms that hold different itinerants. (Technical Drawing, Art, Music, Woodworking, Cooking, Spanish, Sewing, & Health) (They formerly held old Gentex alarms. Not sure which ones though.)
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Wheelock ASs in both of the computer rooms
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EST Genesis’s in the Special Needs Classrooms
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We then have 9129s in the portable classrooms
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Simplex -9846’s in the locker rooms, gym, cafeteria, lecture hall, ect.
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Wheelock MIZ horns in the rooms that are twice the size of the other rooms