Specifically chosen for the Halloween article, the most popular Korean horror film anthology to date is undoubtedly the "girls high school ghost" series, known in English as Whispering Corridors 1-5. Although they share a common theme and all-female casts, the films in this series are not linked to one and other in terms of a continuing storyline or recurring characters.
Above is the poster for the 1998 original featuring star Kim Gyu-ri, who plays an artistically gifted student who's welcomed to her senior year at Jookran Girls High School by the sight of a particularly mean teacher hanging in the schoolyard. This film is considered by many to have marked the beginning of when Korean horror films would finally take their place alongside their Japanese and Hong Kong-produced counterparts as some of the best of the genre to emerge from Asia. However, unlike their counterparts in other Asian countries, Korean horror filmmakers don't rely heavily on extreme splatter, tongue-n-cheek gags, and sophomoric titillation with casts made up of former or current porn queens. (Not that I'm knocking all of that ....just saying.)
(Note: All of the actresses mentioned in this article were at least 18 at the time they appeared in these movies.)