Some American schools had a fundraising tradition usually called "Slave Day" or similar. Students would be "auctioned off" to one another for a day to perform menial or humiliating tasks and the money would go towards a dance, school trip or other activity. Here's a student newspaper article detailing one such tradition from a school in California: https://issuu.com/thesbhsforge/docs/forge_vol_102_issue_7_post_final