Wayside School Is Falling Down(1989)

Louis Sachar

Louis the yard teacher starts off 30 tales of unusual students. Comic sketches precede every chapter. Todd brings a cute adorable plastic puppy who bites back when Joy steals it. Cafeteria lady Ms. Mush serves Mushroom Surprise that changes Ron. When Paul falls out the window, Leslie offers her pigtails to pull him back. On the 19th floor, invisible Allison finds Miss Zarves' class.