"Lord of the Flies" by William Golding has been banned in various schools and libraries across the U.S. due to its themes of violence, savagery, and the depiction of human nature. Critics often cite its graphic content, including scenes of brutality and moral decline, as inappropriate for younger audiences. Additionally, some challenges have arisen from its portrayal of social hierarchies and the loss of innocence, which some find troubling or unsuitable for educational settings. Despite these bans, it remains a significant work in literary studies.

The most acclaimed film adaptation of William Golding's "Lord of the Flies" is the 1963 version directed by Peter Brook. This adaptation is noted for its faithfulness to the book's themes and its stark portrayal of the boys' descent into savagery. The 1990 remake, directed by Harry Hook, offers a more modern take but received mixed reviews for its deviations from the source material. Many critics and fans prefer the 1963 film for its haunting atmosphere and strong performances, making it often regarded as the best version.

The 1963 adaptation of "Lord of the Flies," directed by Peter Brook, is generally regarded as a faithful interpretation of William Golding's novel. It effectively captures the themes of civilization versus savagery and the loss of innocence. The film is notable for its stark cinematography and the use of natural settings, which enhance the narrative's tension. While some viewers appreciate its raw portrayal of the boys' descent into chaos, others may find it slow-paced. Overall, it remains a significant film for its exploration of human nature.

The 1990 film adaptation of "Lord of the Flies" is rated R primarily due to its depiction of violence, disturbing themes, and strong language. Unlike earlier versions, this adaptation presents a more graphic portrayal of the boys' descent into savagery, including scenes of conflict and brutality. The film explores darker psychological elements and the loss of innocence, which contribute to its mature rating. The R classification indicates that the content may not be suitable for viewers under 17 without parental guidance.