No nudity.

Two students making out in a car leads to the male putting his hand up the female's dress, but nothing happens past that.

A male student invites a female to perform oral sex on him. She declines.

Two students kiss while in a bathroom stall.

Two zombies kiss and eat each other (violently) than go down into the screen but after that you see nothing.

A lot of both violence and gore. Extremely graphic by times (many severed heads and limbs, gunshots to the head, and a lot of bludgeoning, bites, and blood). There's one scene where the gym teacher rips off a zombies head and you can see the spine covered in blood.

Fuck, piss, shit, asshole, screw, cocksucker. Fairly constant throughout.

Several anti-homosexual words.

Students are seen drinking beer on several occasions (one while in a car, with the student suggesting that he'll be driving soon). Two students are seen in the hall drinking from a bottle in a bag for a brief moment, then the principle comes and takes them away. The school's principle is seen drinking from a flask and later chugging beer.

Marijuana is smoked by a student on several occasions.

A few jumpy scenes.

Many scenes involving gore and graphic violence.

Students are seen getting chased by zombies but then the grave cleaner hits one of them in the head then the zombie falls offscreen.