The other film I watched was called F. It is billed as a suspense chiller and it is very successful as a suspense film. It is set inside a school college and the main character is an unlikeable teacher there. He has been in trouble for his behaviour with students, he was headbutted at the beginning of the film by one, and is separated from his wife. Things are going downhill for the guy.
For reasons unexplained one evening the school is attacked by a group of guys in hoodies, a face is not shown for any of them. It is dark outside and they seemingly attack the remaining staff who are there at night at random. The main character's daughter is also at the school and he has to try and prevent her from being killed.
It is a strange little film, the ending is odd. The characters and setting are normal enough but it has a nightmarish, unreal quality to it, which I suppose is the intention of horror films. It's probably a little too strange to recommend widely but if you like suspense, it keeps a good sense of this throughout.