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Hooray for Diffendoofer Day! facts for kids

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Hooray for Diffendoofer Day!
Hooray for Diffendoofer Day.jpg
Author Dr. Seuss
Jack Prelutsky
Illustrator Dr. Seuss
Lane Smith
Country United States
Language English
Genre Children's literature
Publisher Random House
Publication date
January 1, 1998
Media type Print (Hardcover and paperback)
ISBN 0-679-89008-4
OCLC 37546897
811/.54 [E] 21
LC Class PZ8.3.G276 Hm 1998
Preceded by My Many Colored Days 
Followed by The Bippolo Seed and Other Lost Stories 

Hooray for Diffendoofer Day! is a children's book credited to Dr. Seuss "with some help from Jack Prelutsky and Lane Smith". The book is based on verses and sketches created by Seuss before his death in 1991, and was expanded to book length and completed by writer Prelutsky and illustrator Smith for publication in 1998.


The story surrounds a school that is well liked by its students notably because of its many eccentric teachers. However, the students must make a good grade on a standardized test (which turns out in the end to be a revising test on multiple subjects they regularly learn) lest they be sent to an adjacent school, which requires uniforms to be worn and is incredibly dull.

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