Film classification is a system used to categorize movies based on their content, helping viewers understand what to expect. Different countries have their own classification systems, such as the MPAA in the United States or the BBFC in the United Kingdom. These classifications often include ratings like G for general audiences, PG for parental guidance, and R for restricted content, indicating that some material may not be suitable for children. The purpose of film classification is to provide guidance to parents and viewers, ensuring they can make informed choices about what to watch. By understanding these ratings, audiences can better select films that align with their values and preferences, promoting a more enjoyable viewing experience.