Instruct: Classify a given review into positive or negative sentiment.
Query: Stupid book, stupid series

I read many Captain Underpants books, including this one, when I was a reading tutor. The books are of very poor quality. There are many misspellings in the drawings and comics. The books are all very predictable. There is very little substance in these books. I would recommend that parents encourage their children to read higher-quality book series such as Beverly Cleary's books, Berenstain Bears, Amelia Bedelia, Magic Treehouse, Magic School Bus, or Miami Jackson.