ALA Marks 150th Anniversary with Most-Challenged Books List
The American Library Association has released a list of its most frequently challenged books, drawing on records from 1990 through 2025. Published ahead of its 150th anniversary on October 6, the compilation…
The American Library Association has released a list of its most frequently challenged books, drawing on records from 1990 through 2025. Published ahead of its 150th anniversary on October 6, the compilation coincides with Banned Books Week. Entries include Harper Lee’s To Kill a Mockingbird and John Steinbeck’s Of Mice and Men. The list records attempts to remove or restrict access to books; inclusion does not necessarily mean a title was removed.
ALA Marks 150th Anniversary with Most-Challenged Books List
The American Library Association has published a retrospective list of its most frequently challenged books to mark its 150th anniversary on October 6. Announced on October 5, the release coincides with Banned Books Week, taking place from October 4 to 10.
The compilation covers challenges documented from 1990 through 2025. Although presented as the “150 Most Challenged Books,” the published list contains 153 entries because its final five titles have equal numbers of recorded challenges.
Gender Queer: A Memoir by Maia Kobabe heads the list, followed by All Boys Aren’t Blue by George M. Johnson and The Bluest Eye by Toni Morrison. Other entries include Harper Lee’s To Kill a Mockingbird, John Steinbeck’s Of Mice and Men and Aldous Huxley’s Brave New World.
The terminology matters: ALA defines a challenge as an attempt to remove or restrict access to material following an objection. A challenge can result in a book being retained, restricted or removed, so the compilation should not be read as a list of titles banned everywhere.
ALA’s Office for Intellectual Freedom compiles its records from reports submitted by library professionals and from U.S. news coverage. The association describes this information as a snapshot, since not every challenge is reported. Its anniversary announcement also notes that 4,235 unique titles were challenged in 2025, the second-highest annual total it has recorded.