The Severn Admirals compete in thirteen varsity sports: sailing, lacrosse, cross country running, football, wrestling, soccer, basketball, swimming, baseball, golf, tennis, field hockey, as well as track and field in the Maryland Interscholastic Athletic Association.

[3] Creeden Hall, constructed in 2002 as the Upper School Academic Center, contains science labs and prep rooms, a greenhouse, "Roche" Lecture Hall, classrooms, two computer labs, and several spaces for students such as Creeden Commons.

[1] Also on this campus is McCleary Student Center which houses Price Auditorium, Bauer Dining Hall, Powell Conference Room, and several arts classrooms for both the middle and upper school.

In 2012, construction was completed on the Stine Outdoor Education Center, a 2-acre space behind the two academic buildings featuring a tiered outdoor classroom, trails, a counsel ring, challenge course with low ropes to promote team building, and an artist's reflection area.

[1] Severn School has also finished the process of constructing the Edward St. John Athletic Center.