To determine the best prison movies, 24/7 Wall St. created an index based on each film’s Rotten Tomatoes average critic rating, Rotten Tomatoes average audience rating, and Internet Movie Database average user rating. To be considered, each film needed to have at least 5,000 Rotten Tomatoes user ratings, 10 approved Tomatometer critic reviews, and 10,000 IMDb user ratings.
We averaged the user ratings from Rotten Tomatoes and IMDb and weighted by the number of votes for each. The combined user rating was then average with the Rotten Tomatoes critic rating.
To be considered, a film had to be either primarily about life in prison or set in a prison.