This fantasy book is the fifth in the "Harry Potter" series by J.K. Rowling and is published by Scholastic Press, an imprint of Scholastic, Inc.
Harry Potter and the Order of the Phoenix is written for kids ages 9 and up. The age range reflects readability and not necessarily content appropriateness.
PluggedIn.com, an entertainment and media ministry of Focus on the Family, has reviewed this book. Here is PluggedIn.com’s review: Harry Potter and the Order of the Phoenix
Book reviews cover the content, themes and worldviews of fiction books, not their literary merit, and equip parents to decide whether a book is appropriate for their children. A book's inclusion does not constitute an endorsement by Focus on the Family.