In the first episode the main character's friend is seen having sex with a guy.

Sex scenes between a 17-year-old student and her adult male swim coach.

A girl almosts drowns in a pool, blood is seen spreading in the water. This seen lasted about 5 seconds. Final 2 episodes of season 3 involve brutal injuries and people are killed but gunshots.

Lots of f-words throughout, spoken by multiple characters.

A character gives the middle finger to another student.

season 1 has 53 uses of the f-word 50 uses of sh-t season 2 has 78 uses of the f-word 60 uses of sh-t season 3 has 77 uses of the f-word 36 uses of sh-t

A lot of alcohol drinking and marijuana smoking by the teen characters