These were the most frequently challenged works in the 1990s, based on voluntary reports from school districts and public libraries to the American Library Association’s office on intellectual freedom:
1. Scary Stories (series, 1984-1991) by Alvin Schwartz
2. Daddy’s Roommate (1990) by Michael Willhoite
3. I Know Why the Caged Bird Sings (1969) by Maya Angelou
4. The Chocolate War (1974) by Robert Cormier
5. The Adventures of Huckleberry Finn (1884) by Mark Twain
6. Of Mice and Men (1937) by John Steinbeck
7. Harry Potter (series, 1998-present) by J.K. Rowling
8. Forever... (1975) by Judy Blume
9. Bridge to Terabithia (1977) by Katherine Paterson
10. Alice (series, 1985-present) by Phyllis Reynolds Naylor
Source: American Library Association, 2001.