This isn't how it works, though. You have a list of names written beforehand of people you want to dance with. Can't dance with the same person twice, and when the card is full then you're done. "The district said Monday in a statement to McClatchy that participation in the school dance is voluntary and explained that students are taught various styles of dancing, such as line dancing, in PE before the event." They're taught dances so one can only assume they'll get a partner from their card for each of those dances IE Lil Jessica dances with Lil Timmy for line dancing and then another for this other dance. It doesn't appear to be the bump and grind type of dance. They still have those events where they can say no to people. They're not forced if the event is voluntary. Forcing them would be making it mandatory but it isn't.