This is a great independent effort. They really take an old fashioned simple concept and make it entertaining. The only real character to speak of is an alcoholic Teacher who appears to be coming slowly undone more and more. After being attacked by a student one day everything just seems to be going wrong for him. I'll just leave it at that. As the viewers were just kind of watching a regular day at school that goes horribly wrong when menacing faceless(which is also a nice touch) killers start slowly taking out all in their way. The movie works with a lot of camera angles, but has a couple of decent gore shots. The directors seemed to be making a more cerebral approach which worked with the breathing and spooky sound tracks. Also, the movie didn't wear out its welcome at an hour and 15 minutes. I would say this is a very watchable British horror flick indeed.