Banned and challenged books in US schools

Titles reported as banned, removed, or formally challenged by at least one US school district in each listed state. “Banned” here is shorthand for “challenged or removed in at least one district”; no state has a universal ban on any of these titles. Scope and status vary by district and by year.

Sources: PEN America’s Index of School Book Bans and the American Library Association’s most-challenged list.