 The campus was expanded by the completion of the Junior School Academic Building (1956), the Little Field House (1957), the Academic Building (1958), the Memorial Chapel (1961), the Administration Building annex (1963), Cadet Hospital (1964), the Field House (1967), "E" Barracks (1968), an Academic Building addition (1969), the Natatorium (1981), a Junior School Academic Building addition (1982), the Centennial Gymnatorium (1988), the new "D" Barracks (1991), the Maintenance Building (1992), an all-weather track and soccer field (1993), Brad Calvert Field (1994), the new "C" Barracks (1995), the Laundry Building (1996), the new "B" Barracks (2002), Rappelling Tower (2002), and an Academic Building addition (2009).This latest addition was the first high school building in Missouri to receive a Leadership in Energy and Environmental Design certification by the U.S. Green Building Council.The building, named "Barnard Hall" after Les Barnard, '48, was completed in time for the opening of school.