What year did the football team inthe most educated, highest-income, and fourth largest combined statistical area in the United States join the Big Ten Conference?
Maryland Terrapins football:  The Terrapins joined the Big Ten Conference on July 1, 2014, following 62 years in the Atlantic Coast Conference as a founding member. Baltimore–Washington metropolitan area:  It is the most educated, highest-income, and fourth largest combined statistical area in the United States.
2014