The Boarding Department at St. Stephen's can accommodate approximately 40 students living in double rooms, with occasional triples or singles, depending on availability, all with Internet and network access. In a close community atmosphere, resident faculty supervisors provide social and academic support to boarding students. Boarders are housed in the school building, boys on the top floor and girls on the second. Every attempt is made to create a family atmosphere for the boarders as well as to provide social opportunities. The snack bar and lounge with audio-video devices are popular spots. Meals are taken in the dining hall, and the food is mainly based on Italian cousine.
Rome and its surroundings provide many opportunities for week-end activities: visits of historical and cultural sites, ice skating, day trips to nearby beaches and ski areas, hiking in the Abruzzi. Boarders are often invited to spend a night or a weekend with a day student's family.