Here is "The Diffendoofer Song." We'd love to have you sing along! We love you, Diffendoofer School, We definitely do. There surely is no other school That's anything like you. You're gribbulous, you're grobbulous, Each day we love you more. You are the school we treasure And unceasingly adore. Oh, finest school in Dinkerville— The only one as well— We love you, Diffendoofer School, Much more than we can tell. You are so diffendooferous It gives us joy to say, Three cheers for Diffendoofer School- HOORAY! HOORAY! HOORAY! Lyrics by Jack Prelutsky, Music by Sharon Lerner, Arranged and Recorded by Bruce Zimmerman.

Text copyright © 1999 by Dr. Seuss Enterprises, L.P., and Jack Prelutsky. Illustrations copyright © 1999 by Lane Smith. Representations of Dr. Seuss characters and images as they appear in Lane Smith's illustrations are copyright © and trademark ™ by Dr. Seuss Enterprises, L.P. Used by permission. Illustrations in "How This Book Came to Be" copyright © 1999 by Dr. Seuss Enterprises, L.P.