This is a super fun, silly story that I think any class would enjoy! I would read this to a kindergarten or first grade class, because it is a very low reading level. Some lessons that could be taught from this book are rhyming words, and fiction. The story keeps a rhyme scheme of ABAB through the entire book, and it is a very obvious way to explain fiction books. Another way to explain this as a fiction book would be to compare this book about pirates to a non fiction book or article about pirates.