The campus has a chapel in which Mass is held daily on weekdays and twice on Sundays. The main student Mass is on Sundays at 8 p.m. There are several priests who work on campus, many of whom also teach classes and there is also a chaplain who regularly officiates mass. It is not a requirement to be Catholic in order to attend Saint Mary's, and students do not have to take courses in Catholicism (two general Religious Studies classes are required, an introductory course of the Bible and Its Interpretation and an elective of the student's choosing). However around 50% of Saint Mary's undergraduate students are Catholic. Many students are also involved in community service. Nearly 10 percent of every graduating class goes on to join a major service organization: the Peace Corps, the Lasallian Volunteers, Teach for America, or the Jesuit Volunteer Corps.