G - General Audiences - All ages admitted
PG - Parental guidance suggested Some material may not be suitable for children
PG-13 - Parents strongly cautioned Some material may be inappropriate for children under 13.
R - Restricted Under 17 requires accompanying parent or adult guardian.
NC-17 No one 17 and under admitted.
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" or "Rating Pending."