In Argentina, there are "fiestas de egresados" for students finishing their last year of high school. These consist of big parties hosted by the senior students in local discos or other venues, starting at 10 p.m. until about 5 or 6 in the morning. They have dinner with parents and other members of the family, and after midnight friends and other guests join the dance. The parties start in late September after most students come back from their senior trip to Bariloche and last until early December, after the graduation. The students dress formally.