With the exception of Lola Créton, the actors portraying the youths were inexperienced, mostly first-time actors found through director Olivier Assayas and casting director Antoinette Boulat having flyers handed out in front of high schools and having set up a casting Facebook page. They did audition other experienced young actors, but only Créton was selected.
Journalist Thomas Sotinel followed the film's production and chronicled it for the French newspaper Le Monde.