A boy and girl share a brief kiss in the classroom in front of the teacher.

At the beginning of the movie, a teacher gets punched in the nose by one of his students. You see blood running down his nose, lips and chin.

A security guard gets punched outside the school at night then gets dragged off.

The girl in detention gets slapped by her teacher.

It shows the librarian laying on top of a bookcase, dead, and blood is dripping off her body.

A woman gets her head bashed in with a fire extinguisher. The teacher finds her and it shows the side of her face bashed in. Very graphic but brief.

It shows a boy bleeding and wrapped in barbwire.

A man gets electrocuted. You see sparks fly and his feet shaking.

A girl is shown crawling on the floor, covered in blood. When they find her, her face is multilated, her stomach is cut and bleeding and she has cuts on her legs. Very bloody and graphic.

During a fight scene, a man stabs a boy in the stomach.

A girl gets stabbed in the stomach.

During a detention, a girl says bullsh*t twice.

Uses of the F* word.

The teacher smokes and drinks in his aprtment before going to class.

While locked in a dumpster, one of the students sets the security guard on fire. All you see are the flames. Nothing graphic.

A woman is stalked by two students in the library.

A girl is cornered in the locker room by four boys. You can see that one of them has a crowbar but it doesn't show them using it.

Overall, this movie which is played in the cat & mouse style, had lots of intense scenes where people are being chased and/or stalked.