Whether it's the kid with great handwriting charging for forged signatures on hall passes or doctor's notes, banned toys or snacks, or selling essays or posters, some students can make a small fortune before they're caught. Shout out to the entrepreneur at my elementary school who sold push-up pops at lunch to kids who were too lazy to wait in the cafeteria line.
Of course, if students are dealing dangerous or illegal substances, or potentially gambling away significant amounts of money, then the school "black market" isn't as harmless as the financially savvy kid who sells completed homework from the back of the bus. So, when a Reddit user asked, "What black market did kids at your school run?" people were ready to share their school's secret scheme.
Grade 6 -1982... the teacher created a fake money (pink paper with smiley face on it)to encourage/ reward certain behaviors and marks. Every one bought into the system bringing in old toys and random stuff. We could exchange the fake money for stuff, extended recesses, bonus time for homework.
My mother worked at an office with color paper and a photocopier, so I got her to make me fake money... I sold it to other student for marbles and hockey cards. Eventually I crashed the market got caught and had to serve time (detention) - billyhbaienes