In this book, David does all the things you shouldn't be doing at school - is late, won't sit down, chews gum, won't keep his hands to himself, you name it. At the end he does a good job with his punishment so he's "good" and is allowed to go home. That's the entire plot. This book is based on a book the author wrote as a young boy - with David and no as the only words he could spell - showing all kinds of naughty things David is doing.
I do like the illustrations though. I see the humor in the book. Ricky always says that David is a bad boy.