Corrected entry: When all the teachers are gathered in a room and the killer calls them, he taunts them about his crimes before saying "click" and then hanging up. However, this is impossible as both killers in the film (Principal Peters and Miss Mumsley) are present in the room when this person makes the phone call.
lartaker1975
22nd Jan 2015
Correction: You also have to remember that all this took place in the dream of the female lead as evident when she wakes up and everyone "dead" is still alive and changed. For example the janitor is now a teacher.
lartaker1975