Classroom Chuckles Author:Bill Knowlton Would you beleive a junior high school principal who is laso a nationally known cartoonist of school life? Meet Bill Knowlton, Princpal of Edison Junior High in Waterloo , Iowa. He's been a teacher for more than 20 years, so he knows what goes on in classrooms. Isn't it nice that he can still laugh about it? Book published 1969