I've seen this in a bunch of elementary classroom. It teaches the students responsibility and the jobs shift so, each student gets to do everything once. This is something I am going to do in my future classroom hands down.
Coincidence Or Not? No its not a coincidence you idiot, some loser sat down and figured that out, instead of actually doing anything productive or interesting with their valuable, short and precious lives they made a dumb post to impress people.