Mr. Hynde is Out of His Mind by Dan Gutman is Book 6 in "My Weird School" series. This one is about a new music teacher who gets the kids moving and uses rap which is very different from what the kids were used to. Most kids like him, a few do not. The kids get a big surprise when the principle tells the teachers to turn on their TVs in the classrooms.
I enjoyed this book too, but not quite as much as Miss Daisy is Crazy. I laughed at some of the dialog and recommend this for elementary children. (Karen's review, 4 stars)