Bishop Denis J O'connell High School is located in Arlington, VA. It is a private school that serves 1277 students in grades 9-12. Bishop Denis J O'connell High School is coed (school has male and female students) and is Roman Catholic in orientation. The school belongs to the National Catholic Educational Association.
In 2010, Bishop Denis J O'connell High School had 13 students for every full-time equivalent teacher. The Virginia average is 18 students per full-time equivalent teacher.