The "schulklopfer" was usually a beadle, who would perform the task by wandering around the community, knocking on each household's door.
en.wikipedia.org On the way, he met various people -- a laborer, a shepherd, a beadle, some laundresses -- and asked whether they had seen the children.
en.wikipedia.org Henceforth, the authority of the chancellor came to be symbolized in the maces carried by his two beadles on official occasions.
en.wikipedia.org The foreground is strewn with spare bones and skulls, and behind him a beadle is about to strike him with a cane for his insolence and tardiness.
en.wikipedia.org Beadle received a seven-match touchline ban after accepting misconduct charges, and was fined 1,500, half of which was suspended subject to good behaviour.
en.wikipedia.org