It can't be SAW since that movie was made in 2004, and the movie I'm looking for was shown for me and my class back in like 1994-1995 or so.

Hell I'm not even sure if it is a movie that's even known outside of Sweden, it could very well be a Swedish movie but I'm not sure, maybe not.
I have no idea how to find it if no keywords on Google ever give me any clues in neither Swedish nor English.