Rating is the process of evaluating and categorizing audiovisual works for the application of viewers’ discretion.  This system was developed to provide information to parents about the age-appropriateness and content of audiovisual works including motion pictures, television programs, and video games.  Ratings are easily recognizable and simple to use, and are applicable to most audiovisual works, including those directed specifically to young children.  Audiovisual works are rated on the basis of theme, language, violence, nudity, sex and drug use in the decision-making process.

Motion picture ratings system is a voluntary system operated by the Motion Picture Association of America (MPAA) and the National Association of Theater Owners (NATO).  These ratings are intended to provide parents with necessary information to decide for themselves which films are appropriate for viewing by their own children.

TV ratings system in the U.S. was developed by the television industry to provide information to parents about the age-appropriateness and content of TV programs.  They are easily recognizable and simple to use, and are applicable to most television programs, including those directed specifically to young children.

Video games are said to increase violent tendencies among youth, even though studies have shown no conclusive link between video game usage and violent activity.  Certain researches have proved that some patterns of video game plays are more likely to be associated with behavioral problems resulting in major violent crimes such as school shootings.  Voluntary rating systems adopted by the video game industry, such as the Entertainment Software Rating Board (ESRB) rating system is aimed at informing parents about the types of games their children are playing.