mppa

 The motion picture association of america's film-rating system is used in the us ,the MPAA rating system is a voluntary scheme not enforced by law and films can be exhibited without a rating, though many theaters refuse to exhibit non-rated or NC-17 rated films.


their members are six production companies which are  paramount pictures, 20th century fox, loweus, universal studios, warner bros, columbia pictures, united artist, and rko pictures.

some people think that  The MPAA's purpose is to tell us the nature of the film, if it's excessive in violence, language, or nudity, and give it a rating which is a general guideline of what age groups the film is appropriate for.

Rating symbol	Meaning
	G – General Audiences All ages admitted. This movie contains nothing that would offend parents for viewing by children. Such films may contain only mild violence or crude humor, and may have no nudity, sex, drugs or coarse (as distinct from impolite) language. The discrimination/bullying and emotional intensity must be minimal. Alcohol and tobacco may be used in small amounts by adults in the movie, but not by minors, especially in older G-rated films. The violence or horror must be cartoonish in nature or minimal in quantity.
	PG – Parental Guidance Suggested Some material may not be suitable for children. Parents are urged to give parental guidance as the motion picture contains some material that parents might not find suitable for their pre-teenagers. Such films may contain some violence,infrequent coarse language,crude situations,suggestive material,some rude or unsophisticated behavior, discrimination/bullying, thematic elements,disturbing/startling images, mild horror, action and peril, emotional intensity, drug references, alcohol, tobacco, brief partial or somewhat complete nudity and/or implied or some sexual situations.
	PG-13 – Parents Strongly Cautioned Parents are urged to be cautious as the motion picture contains some material that parents might consider inappropriate for children under 13. Such films may contain moderate to strong violence, horror, action and peril, strong coarse language, some suggestive material and partial or somewhat complete nudity, strong rude or unsophisticated behavior, discrimination/bullying, alcohol, smoking, intense sexual situations, crude situations, thematic elements, emotional intensity, disturbing/startling images, and/or soft drug use or references.
	R – Restricted People under 17 may only be admitted if accompanied by a parent or guardian. Such films may contain rough and/or persistent violence and suggestive material, hard language, strong horror, action and peril, strong crude sexual content, alcohol, tobacco, thematic elements, hard crude situations, emotional intensity, disturbing/startling images, hard rude or unsophisticated behavior, discrimination/bullying, sexually oriented nudity, and/or hard drug use.
	NC-17 – No One 17 & Under Admitted This film is clearly adult and people under the age of eighteen are not admitted. Such films may contain brutality/pervasive extreme non-stop graphic violence, explicit sexual content, sexual assault, extreme horror, extreme emotional intensity, discrimination/bullying, crude situations, strong graphic non-stop language, disturbing/startling images, strong graphic drug use, alcohol, tobacco and/or aberrational behavior.

these are good because they let you know which movies are appopriate for your age or your kids age and it protects people from thing that might traumatise them or hurt them psychologically. 

runner runner starring be affleck and justin timberlake was r rated because of the language and the sexual content. i think this was a good rating because ever movie with grafic sexual content or foul language should be r rated to protect the younger movie audiences.

baggage claim was rated pg 13 because some of its sexual content and language it was also rated fairly because the sexual content and language werent too much to be r rated but they were abit too much to be rated g or just pg