Have you ever wondered how to get a bunch of groups to perform in a short amount of time? I remember when my two oldest kids were in high school. The concerts were great, but they seemed to drag on as the stage crew set each chair exactly in place between each group. I didn't care about the chairs!
Incorporating some advice from friend and fellow band teacher Wayne Hoey, this past May my spring concert included 5 performing groups and we finished in 62 minutes! Parents told me that was their favorite concert ever.
But you need a plan. See www.jamesdivine.net for mine.