Usually 5 stars to rate a movie but IMDB.COM uses a 10 star rating other sites might be similar.
The M rating is reserved for video games, and is not used in movies.
There are several Pixar movies that have a PG rating such as The Incredibles, Up, and Brave.
IN YOUR BODY
The saw movies are rated R
The Movies - 1925 is rated/received certificates of: USA:TV-G (TV rating)
Yes, I agree with Movie ratings. It helps you pick what movies are best. And what movies suck.
Best 10 Colour movies ever - toprater.com/en/movies/rating/criteria/colour/filters
Rodgers and Hammerstein The Sound of Movies - 1996 TV is rated/received certificates of: Australia:G (video rating) UK:U (video rating)
There is a star rating because there are stars in the movie, movie stars. And people want to see if the movie is good or not.
The current MPAA rating system began in 1968. It has been updated several times through the years.
Yes, there are many weight loss surgeon rating systems on line. You can research the rating system by visiting doctor.com