NORMAN — A visit by a best-selling author to a Norman middle school was canceled after a parent questioned the content of one of the author’s books. Author Ellen Hopkins was scheduled to speak to eighth-graders at Whittier Middle School today about her career, writing process and books. Hopkins is the author of several New York Times best-selling books for young adults. She was notified Thursday her visit was canceled because a parent at the school requested a review of her book "Glass.” The free-verse novel is the second in a series about a teen dealing with drug addiction. The novel is loosely based on Hopkins’ experience with her own daughter, who was addicted to methamphetamine. Hopkins said it’s ironic her visit was canceled this week because the American Library Association’s Banned Books Week begins Saturday. Norman policy allows parents to exclude their children from events or request a review of curriculum, Superintendent Joe Siano said. A parent requested an official review of "Glass” last week. Because curriculum review is a lengthy process, a decision couldn’t be made before the author’s scheduled visit, he said. "I made a decision that while it was under review, it wasn’t appropriate for the author visit to continue,” Siano said. An internal committee made up of administrators, teachers and librarians will review "Glass” and possibly Hopkins’ other books to see if they should be in middle school libraries, Siano said. The district’s policy is to leave the books on the shelves until a decision is made. "This is not an issue of the author or quality of her work,” he said. "The question is about the appropriateness of the book for this age level.” All of Hopkins’ books deal with serious issues that teens face, she said. She’s trying to show students what could happen if they make bad choices and go down those paths. "I’ve done hundreds of school visits, and I certainly have sensitivity to those audiences,” Hopkins said. "I always focus on an anti-drug message. Instead of trying to shoot the messenger, why don’t you open the book and look at the message.” She describes her books as raw and honest, targeted to readers age 14 and older. "It’s a very honest look, and it needs to be an honest look to make young people think,” she said. "I want to make them look at how their choices affect them in the future and affect those who love them.” Jamie Chosak, director of Kids Right to Read Project, said her organization plans to get involved. The organization is a collaboration of the American Booksellers Foundation for Free Expression and the National Coalition Against Censorship. It tracks censorship issues across the nation. Chosak said she plans to send a letter to the school district because she feels it’s both censorship and a free speech violation. One parent’s issue with a book shouldn’t keep other students from having the choice to read it, she said. Hopkins, who lives in Nevada, decided to come to Oklahoma anyway because she had already paid for a plane ticket. Whittier librarian Karin Perry, who won the author visit in a charity auction, has scheduled an off-campus event tonight for students and their parents who would still like to hear Hopkins speak.