It looks like trouble when the principal asks Arthur to take home a large envelope marked CONFIDENTIAL. His friends try to guess what's inside. It might just be information on...summer school! Will Arthur face the consequences or pretend to lose the envelope?

In chapter-book format, for children who are ready to read on their own, this mysterious adventure will surely be a hit among Arthur fans.

This book is part of a book series called Arthur .

There are 64 pages in this book. This book was published 2011 by Little, Brown & Company .

Marc Brown is the creator of the bestselling Arthur Adventure book series and codeveloper of the number one children's PBS television series, Arthur. He has also created a second book series, featuring D. W