Beginning in 8th grade, students participate in retreats annually with their classmates. Retreats are intended to encourage students to build friendships and relationships with their classmates and teachers, as well as promote community service. For grades 9-11, team building through community service is an integral part of the agenda of each retreat. A student’s time at Billings Central Catholic High School culminates with Senior Retreat, a weekend at St. Thomas Camp for all graduating seniors two weeks prior to graduation. Students often report that their experience at Senior Retreat is one of their best memories of their high school days.