The movie ratings system is a voluntary system operated by the MPAA and the National Association of Theater Owners (NATO). The ratings are given by a board of parents who comprise the Classification and Rating Administration (CARA). CARA’s Board members view each film and, after a group discussion, vote on its rating. The ratings are intended to provide parents with advance information so they can decide for themselves which films are appropriate for viewing by their own children. The Board uses the same criteria as any parent making a judgment – theme, language, violence, nudity, sex and drug use are among content areas considered in the decision-making process.
  
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This database contains movies rated since 1968.

Parental Media Guide
Advisory information for TV, Records, CDs and Computer, Video and Internet Games.

Who Rates the Movies and How Does It Work?
What Do the Ratings Mean?: G, PG, PG-13, NC-17, R
Ratings Posters
Ratings and Advertising

What is the Purpose of the Ratings system?
Ratings History
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