The movie rating system is a voluntary system sponsored by the Motion Picture Association of America and the National Association of Theatre Owners to provide parents with advance information on films, enabling parents to make judgments on movies they want or do not want their children to see.

The rating board uses the criteria you as a parent use when deciding what is suitable viewing for your child. Theme, language, violence, nudity, sex and drug use are among those content areas considered in the decision-making process. Also assessed is how each of these elements is employed in the context of each individual film. The rating board places no special emphasis on any of these elements; all are considered and examined before a rating is given.

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    What the ratings mean...
G - General Audience
All ages admitted. This signifies that the film rated contains nothing most parents will consider offensive for even their youngest children to see or hear. Nudity, sex scenes, and scenes of drug use are absent; violence is minimal; snippets of dialogue may go beyond polite conversation but do not go beyond common everyday expressions.
PG - Parental Guidance Suggested
Some material may not be suitable for children. This signifies that the film rated may contain some material parents might not like to expose to their young children - material that will clearly need to be examined or inquired about before children are allowed to attend the film. Explicit sex scenes and scenes of drug use are absent; nudity, if present, is seen only briefly, horror and violence do not exceed moderate levels.
PG-13 - Parents Strongly Cautioned
Some material may be inappropriate for children under 13. This signifies that the film rated may be inappropriate for pre-teens. Parents should be especially careful about letting their younger children attend. Rough or persistent violence is absent; sexually-oriented nudity is generally absent; some scenes of drug use may be seen; one use of the harsher sexually derived words may be heard.
R - Restricted
Under 17 requires accompanying parent or adult guardian (age varies in some locations). This signifies that the rating board has concluded that the film rated contains some adult material. Parents are urged to learn more about the film before taking their children to see it. An R may be assigned due to, among other things, a film's use of language, theme, violence, sex or its portrayal of drug use.
NC-17 - No One 17 And Under Admitted
This signifies that the rating board believes that most American parents would feel that the film is patently adult and that children age 17 and under should not be admitted to it. The film may contain explicit sex scenes, an accumulation of sexually-oriented language, or scenes of excessive violence. The NC-17 designation does not, however, signify that the rated film is obscene or pornographic.