 Since 1926, the high school has a special prom assignment system used so each student has a date during prom and so cohesion increases among the students.The nuns operating the school first created the tradition, in part to provide inclusion for the students who attended Aquin from St. Vincent's Orphanage (just across the street), and as years passed other elements became a part of the annual event.On the day prom dates are assigned, the school places female students in the gymnasium and the male students in the library.