MPAA film rating system
The MPAA film rating system is a system used in the United States and territories and instituted by the Motion Picture Association of America to rate a movie based on its content. It is one of various motion picture rating systems used to help patrons decide which movies may be appropriate for children and/or adolescents.

In the United States, the MPAA rating system is the most recognized system for classifying obscene content, but it is not used outside of the film industry because the MPAA has trademarks on each individual rating.

Current ratings
Rated G—General audiences
All ages admitted.
Rated PG—Parental guidance suggested
Some material may not be suitable for young children.
Rated PG-13—Parents strongly cautioned
Some material may be inappropriate for children under 13.
Rated R—Restricted
No one under 17 admitted unless with a parent or adult guardian
Rated NC-17
No one 17 and under admitted.
Not Rated NR
If a film has not been submitted for a rating, the label "NR" (Not Rated) is often used; however, NR is not an official MPAA classification. Films that have not yet received MPAA classification, but are expected to, are often advertised with the notice, "This film is not yet rated."
X-rating
The X-rating originally referred to a non-trademarked rating that indicated a film contained content unsuitable for minors such as extreme violence or explicit sex and thus was for adults only.
When the MPAA film rating system was instituted in 1968 in the U.S., the X-rating was given to a film by the MPAA if submitted to them or, due to its non-trademarked status, it could be self-applied to a film by a distributor who knew beforehand that their film contained content unsuitable for minors.
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "MPAA film rating system".