Lancaster schools organized pupils into pyramid monitoring chains within one room

Evidence

Each bench constituted a ‘class’ of eight or ten pupils, and was under the supervision of a senior pupil who monitored the behaviour and work of the other students. At the command of a whistle or bell each class moved from its bench to one of the boards that were placed on the walls around the room, and stood on a semi-circular line marked on the floor around it. The boards were numbered in a sequence of ascending difficulty, and on each one there were written letters, numbers, or words, which another student monitor was allocated to teach. — Timothy Mitchell, Colonising Egypt, 225