“I Know Why the Caged Bird Sings” by Maya Angelou, “Catch-22” by Joseph Heller, “The Things They Carried” by Tim O’Brien, “The Great Gatsby” by F. Scott Fitzgerald, and “Invisible Man” by Ralph Ellison were all taken off an approved list of works that teachers in the Mat-Su Borough School District may use for instruction.

The school board voted 5-2 on Wednesday to yank those works out of teachers’ hands starting this fall. The removed books contained content that could potentially harm students, school board vice president Jim Hart told NBC News on Tuesday.

Mat-Su Burrough is Sarah Palin’s stomping grounds.

Several books that were not removed from classrooms still came under harsh scrutiny. “The Jungle” and “A Christmas Carol” could be interpreted as advocating for socialism, while “A Street in Bronzeville” was called to question for showing too much “realism” in describing racism against African Americans, according to a district memo.

nbcnews.com