A man walks down the halls baring his naked butt.

A man gives oral sex to another man. Not explicit or graphic, but we can see the movement.

Male testicles are seen several times and male genitals are easy to distinguish through thin clothing materials. female breasts and partly female butts are shown as well.

A guy takes a look at another guy's buttocks while showering, saying he was looking at his scar.

A man gets caught masturbating by his partner in the shower.

Season 4 is alot more graphic in terms of sexual content, there is a lot more than there was in the other seasons.

Fight scenes involve scuffles and punches.

The show includes some graphical details of violence like fights, murders... where blood really stands out.

A murder anchors much of the plot, and we see a teen girl as a dead body, with the camera lingering on her face and pouty lips. Teen boys scuffle and punch each other at a party; sexual situations are iffy (a girl seduces a boy so her boyfriend can secretly watch; two teens conspire to entice a "virginal Muslim girl" into having sex).

Language is in Spanish, subtitled, and cursing includes "s--t," "f--king," "f--k," "hell," "ass," "a--hole," "dick." Teens flip each other the bird. Language may also have a gendered aspect that bilingual or sharp listeners will pick up on, like when one character jokingly calls another "hijo de puta" literally "son of a prostitute" but translated as "son of a bitch."

Teens guzzle champagne and beer and get sloppy at a party.

Drinking throughout each season.

Many characters habitually smoke cigarettes.

Lots of drug dealing takes place across the series. Cocaine is taken by multiple characters in S2 and S3

Multiple characters overdose on various drugs throughout the show.

A large stash of cocaine is discovered, two teenagers decide to make a business out of it by dealing it at school.

One character abuses his medication for anxiety. He ends up almost drowning due to an overdose.

Heavy partying and drug use in Season 5 especially. (Severe)

Many characters habitually smoke cigarettes. Teens buy hashish from a dealer, learn to roll it into a cigarette by watching an online video, and then smoke it. At a party thrown by a girl's parents, teens guzzle champagne and beer and get sloppy; one vomits on another character and then makes a chancy sexual decision.

Murder and assault are common themes throughout the entire series.