Gakkō no Kaidan (学校の怪談) (1995) is the first of a series of Japanese horror movies based in the book series created by Toru Tsunemitsu. Unlike most horror flicks, this movie was intended to receive a family-friendly rating by Japanese standards.
The movie revolves around an elementary school, where a girl called Mika disappears mysteriously after following the sound of laughter into the bathroom. The rumors of the school being haunted, strange things happening around 4:44 AM and the disappearance of children soon come to emerge, but Mika's older sister and her friends decide to go after Mika despite this. However, they soon find out that the all the rumors are true, and now they not only have to find the girl, but also for save themselves from the nasty ghosts that haunt the school building.