A crazy, mixed-up school. There was a terrible mistake. The Wayside School was supposed to be built with thirty classrooms, one on top of the other, thirty stories high! The contractor said he was sorry. Maybe that's why all sorts of funny things happen at Wayside School, especially on the thirteenth floor. You'll meet Mrs. Gorf, the meanest teacher of all, the terrible Todd, who is always sent home early, and John, who can only read upside down, along with all the other kids in the crazy, mixed-up school that turned out wrong. But you will never guess the truth about Sammy, the new kid, or what is in store for Wayside School on Halloween!.