How do you get a whole high school to participate in a backwards music video?

I wish my high school was this cool. They got the whole school to do a music video backwards... in ONE take. Amazing. Go Shorewood High.

Watch Sugar Water by Cibo Matto.This music video is like a cross between Irriversiblé and Time Code, except this came out a few years before both of them. Amazing timing and technical skill in producing this music video.