The Motion Picture Association of America's (MPAA) film-rating system is used in the United States and its territories to rate a film's suitability for certain audiences, based on its content. The MPAA rating system is a voluntary scheme that is not enforced by law; films can be exhibited without a rating, though many theaters refuse to exhibit non-rated or NC-17 rated films. Non-members of MPAA may also submit films for rating. Other media (such as television programs and video games) may be rated by other entities. The MPAA rating system is one of various motion picture rating systems that are used to help parents decide what films are appropriate for their children.
The MPAA's rating system is administered by the Classification & Ratings Administration (CARA), an independent division of the MPAA.
If a film has not been submitted for a rating or is an uncut version of a film that was submitted, the labels Not Rated (NR) or Unrated (UR) are often used. Uncut/extended versions of films that are labeled "Unrated" also contain warnings saying that the uncut version of the film contains content that differs from the theatrical release and may not be suitable for minors.
If a film has not yet been assigned a final rating, the label This Film Is Not Yet Rated is used in trailers and television commercials.