The planning and construction, in the late 1950s, of a central Catholic high school represented the combined efforts of six Catholic parishes in Oshkosh, Wisconsin: St. Mary, St. Peter, St. Vincent, Sacred Heart, St. Josaphat, and St. John.

Some facilities were used by both, including science and chemistry labs, the gymnasium, chapel, cafeteria, and library.

The Bill Behring Commons, completed in 2005, is a large open space facing Witzel Avenue.

The commons has a large gathering hallway and space with adjoining rest rooms, trophy cases, concession facilities, the athletic directors' office next to it, and staff lounge also next to it.

The lobby connects gym facilities, band room and the student commons, and serves as a reception and gathering area.