content rating meaning in Information Science terminology / glossary / dictionary is:
A labeling system that uses ranks, grades, or classes to index mediacontent, primarily as a means of controlling access by minors to material considered suitable for adults only. In the United States, most motion pictures produced for theatrical distribution are rated by the Motion Picture Association of America (MPAA) according to a voluntary system introduced in 1968, using five categories to indicate age-appropriate content: G: General Audiences; PG: Parental Guidance; PG-13: Parents Strongly Cautioned; R: Restricted (anyone under 17 must be accompanied by a parent or adult guardian); and NC-17: No One 17 and Under Admitted.In response to evidence that viewing television violence can have negative effects on the psychological development of children and adolescents, Congress included a provision for “Parental Choice in Television Programming” in the Telecommunications Act of 1996 (TCA), giving parents greater control over content available on their home television receivers. TCA required manufacturers to include a V-chip in new TV sets and recommended that the television industry develop a voluntary rating system readable by the V-chip. In January 1997, entertainment industry executives began implementing “TV Parental Guidelines,” a controversial four-level rating system based on the MPAA movie ratings. Many child advocacy organizations preferred ratings modeled on the premium channel system, designed to indicate the amount of sex, violence, and vulgar language by such labels as: SC: Strong Sexual Content; MV: Mild Violence; AL: Adult Language; etc. In July 1997, the industry and public advocacy groups agreed on a compromise that adds content indicators to age-based guidelines. Compare with filtering. See also: British Board of Film Classification and Motion Picture Production Code.