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.

In North London, the teacher of the Wittering College Robert Anderson (David Schofield) is hit on the face by a student and is forced to take three months vacation to be not sued by the parents of the kid.

Robert is affected by the incident and a couple of months later, he is emotionally disturbed, alcoholic and separated of his wife Helen (Juliet Aubrey). Their daughter Kate (Eliza Bennett) lives with her mother and has classes with Robert, but she does not respect her father. The principal of Wittering College, Sarah Balham (Ruth Gemmell), loathes Robert and wants to get rid of him, but the Union does not allow her to fire him.

When Robert reads about violence in another school, he sends a memo advising the employees of the school and he is considered paranoid and delusional by everybody. One day after hours, Robert notes some strange movements outside the school and he advises the security guard James (Finlay Robertson) that does not give much attention to the discredited Robert. But sooner Robert realizes that the Wittering College is under siege of a gang of hooligans and he need to find Kate to protect his daughter.

"F" is a film with that had potential to be a great movie. Unfortunately the inconclusive story is shallow and does not develop the characters that are unlikable or the situation, and has a weak ending.

Robert is a looser and emotionally unstable; Kate is a bitch; Sarah is another bitch; Helen is also a bitch; James is coward; Kate's boyfriend Jake is a douchebag. Robert seeks out Kate in the school without any weapon (a piece of wood, a ax or whatever) to defend himself and his daughter from the gang. The conclusion is absolutely disappointing. My vote is five.

Title (Brazil): "Adolescentes em Fúria" ("Teenagers in Rage")

Where to start? No on-screen violence. No identities for the hoodies or any real reason why they decided to kill everyone. Not a single likable character. The protagonist is an alcoholic who hits his own 16 year-old daughter! There's no one to root for, I wanted them all to die. It's a disaster.

These 'hoodies', you still can't see any part of their faces even in scenes where there are big fluorescent lights above them! Logic check! If you go by the start, they are also supposed to be 'F' grade students taking revenge (although this isn't clear), but they must have 'A' grades in Athletics because they run about on large bookcases in the library, fall from the ceiling at every opportunity, they act like stealth ninjas from start to finish.

The ending. Well, there isn't one. The few people that had actually stayed in the cinema just muttered "What?". It's all a very confusing and badly put together mess. Avoid.