It was Louis Sullivan's apprentice, Frank Lloyd Wright, who endowed Chicago with its most distinctive style, the "Prairie School", from a small studio in Oak Park.

BBC: The infamous architecture of Chicago

The company that stands to gain most from a data-driven school is National Computer Systems in Eden Prairie, Minn.

FORBES: Instant feedback in the classroom

Wright's Prairie Homes contrasted the grand edifices of the Chicago School with their modest low-slung horizon lines, flat roofs, overhanging eaves, unadorned open spaces and natural materials that mirrored the Midwestern landscape.

BBC: The infamous architecture of Chicago