There's an arrangement of the Wizard of Oz (I think it's the Highlights one) by Michael Story that has three movements. I used to have it in the rotation with my top JH band. It's marked easy, but by the time you deal with it being a medley it's more of a 2. If you want to really bring down the applause do some sort of slideshow or video with the kids playing at the same time as the last movement on over the rainbow. Maybe senior pictures?