The children in the movie talk several times about seeing girls naked. A boy sings a song about masturbation.

A man is cut by some glass (offscreen) and we see his face bleeding. Two boys fight in a laundry room and one of them says, "I'll rearrange your face." A boy attempts to strangle a man after the man repeatedly slaps him on the face.

Infrequent strong profanity. Surprising for a children's film

The S-word is used twice. The F-word is also used twice. The D-word is used at least once.

A couple of mischievous pupils sing a song below the headmaster's window, which makes reference to his c*ck (in the English sub-titles).

The spanish version of the movie includes more language, even though it's rated as it is for every age.

Some of the older children smoke in this movie.

Several possibly frightening and disturbing scenes.

Reference is made to a former pupil committing suicide.