When you think about it, even tho the prank aspect is all "Kid", it is amazing to see THAT many teenagers get together to pull such a stunt and not damage anything, or ...... screw it up.
Discipline (To keep it harmless)
Artistic Skills (They were ALL acting)
all the skills you need pull something off well in the work a day world, and have fun doing it too.
As an adult in the position of having to punish them, I would have a hard time keeping a straight face.
It should be turned into a class project!