High School Mystery: Gakuen Nanafushigi
Genres: Horror, Mystery
Type: TV, Episodes: 41
Aired: Apr 12, 1991 to Mar 13, 1992
Source: Unknown
Rating: R - 17+ (violence & profanity)
Synopsis:
Mizuki Ichijo is a junior student at Kosen high school. Her grandmother was a medium and she experiences various psychic and mysterious phenomena which occur at the school: accidents, suicides, bullying, resentment, romance and more. She is befriended by the third year student Meiko Tsukikage, and together they attempt to solve the mysteries.

(Source: Wikipedia)