There was a terrible mistake - Wayside School was built with one classroom on top of another, thirty stories high (The builder said he was sorry.) Maybe that's why all kinds of funny things happened at Wayside-especially on the thirteenth floor.

    The author won the 1986 Reuben Award as Outstanding Cartoonist of the Year and has also illustrated Something Under the Bed is Drooling, Calvin and Hobbes' Yukon Ho! and Weirdos From Another Planet.

    The attempt succeeds until Mr. Cooper asks Katie too many questions.