9. Their Eyes Were Watching God, Zora Neale Hurston, 1937

Parents of students in AP English classes in a Virginia high school objected to language and sexual content in this book, which made TIME magazine’s list of top 100 Best English-Language Novels from 1923 to 2005.

10. To Kill a Mockingbird, Harper Lee, 1960

Lee’s take on racial injustice, mixed with rape, has riled communities such as Moss Point, Miss., and Santa Cruz, Calif., where critics challenged the book in 1995 because of its racial themes, according to the ALA. The Southwood High School library in Caddo Parish, La., removed it that same year after objecting to its language and content, the association said.

More information on challenged, or banned, books can be found in the ALA’s State of America’s Libraries Report 2013.