How many people are in the school hallway movie sixth sense?

The school hallway movie you are referring to is likely "The Sixth Sense". In this movie, Bruce Willis plays a psychologist named Malcolm Crowe who is seeing a young boy named Cole Sear (Haley Joel Osment) who is able to see and communicate with ghosts. In one scene, Cole walks down the school hallway and sees a large group of ghosts standing around. The exact number of ghosts in this scene is not specified in the movie.