Plot hole: During the end the murderer is thrown out the front window of the building. The students leave the building through the front door, but yet there is no body, and that doesn't seem to bother them!

Plot hole: Reese was only walking away for a few seconds before the killer cuts the Dean's heels, at which he screams loudly. How did Reese, who couldn't have been more than 10 feet away, not hear this?

Continuity: The killer leaves the corpses of the Dean and Parker where they are and walks away, but they later appear in the room at Stanley Hall.

Continuity: During the scene with Parker, Natalie and Brenda talking in the coffee lounge, the bottles of water on the table in between them rotate on their own accord. Additional items move and appear as well as the scene goes on.

Continuity: At the end of the film, Paul went in the house when it was raining, but his coat is not wet.

Plot hole: If an entire floor of students were murdered by a deranged teacher (in Stanley Hall), no amount of money could buy off each and every one of the families. It would only take one to kick up a huge fuss, go to the press and generally cause havoc for the university. It definitely wouldn't be swept under the carpet and forgotten about.

Continuity: In the climax of the movie, Brenda is shot out of the boarded up window. However the boards that are nailed across the window change. Firstly, there are only a few planks with many gaps. But from outside, the whole window is boarded, with NO gaps.

Continuity: When the killer has hanged Damon in the tree and smashes the front window of the car, the girl in the car is backing, and when she does that the killer falls off the car, and then you can, if you listen carefully, hear a mans voice "say" something like "uff". The killer is a girl but the stuntman is a man.

Continuity: When Michelle thinks she is being attacked, she grabs the phone and throws it through the window, and it smashes out all of the glass. Yet as she climbs out, there is an amount of glass which has reappeared in the side ledge.

Continuity: Near the end of the movie Natalie finds Brenda laying on the bed. Then suddenly Brenda gets up and suprises Natalie by punching her on her right [our left] cheek. However when Natalie awakens, tied to the bed, the bruise is on her other cheek.

Continuity: When Damon leaves the car to go into the woods to pee, Natalie soon becomes confronted by the lunatic. She opens the drivers seat door and the window is fully closed. In the next shot it is wide open and she rolls it up frantically.

Continuity: When Sasha is on the air in her radio station talking to a caller who has phoned in, she sits down and removes the outer cover on her microphone. However in the next shot the cover is back on. It is then off again in the next shot.

Continuity: When Natalie is in the car, all of a sudden the tapping on the car roof starts, like the Urban Legend. The thuds and taps cause the passenger seat sun-visor to fall down. But in the next shot from outside, it is pushed back up.

Continuity: In the first shot of Tosh at the computer in the Goth chat room, she has black lipstick on. From then on her lips are clean; leaving it open for her to say that she 'is just going to get ready', to her chat room friend.

Revealing: When Natalie is in the old building and she is looking around, she opens the door and Parker's dead body falls out onto the floor. When it cuts to a close up of his body, you can clearly see the side of his neck pulsating although he is dead.

Factual error: If you cover someone's mouth with a 2-3 inch strip of duct tape, or electricians tape, rather than go around the entire head, it is VERY VERY easy to repeated open your mouth wide, then scrunch face over and over again and work the tape off to the point where you can scream. Actually, duct tape, which is used by most of the offending movies is even easier than that.  It can usually be almost completely removed in a matter of seconds.  Electricians tape as used in this movie, is a little harder since it is stickier, by still can be done fairly easily. I suppose that it can be argued that people in these situations are scared, or don't know any better and therefore don't TRY to remove it. But in this movie, the main character is getting her stomach cut open and screaming in intense pain.  This would cause enough facial movement for the tape to work itself free.

Continuity: When Brenda is caught wounding Natalie by Reese, she backs away. As Reese points her gun at Brenda and tells her to back up, between shots Brenda's coat keeps changing it's position on her shoulders from on or off them.

Continuity: When Natalie opens the door and Parker's body falls out, it is covered in foam from the way in which he was killed earlier on. Between shots the foam covering his differs. Also, the position of his right arm changes between these shots.

Continuity: When Michelle pulls up into the gas station, her windshield wipers are on. The wipers are just about to swing upwards. Cut to a close up and they are no longer in the process of swinging upwards but, are down.

Visible crew/equipment: When the camera is fixed on the television set, showing the news report of the death of Michelle, if you look to the left of the screen, there is a reflection of the camera, but more noticeable is the large red dot from it.