Kids will often lie to parents, telling them that they are going here when they are really going there. It would not be that difficult for kids to tell their parents that they are going over a friends house or going to the beach etc., when they are really going to this freak prom. Last year, there were buses available, so there is transportation to these events. There is a lot of money going on here. This has been very well organized for many years.
I wonder who these “chaperones” really are? Do you suppose some of them have police records? Don’t be surprised.