The Atlantic 10 Conference is a collegiate athletic conference which operates mostly on the United States' eastern seaboard. It also has two members in the Midwest, Dayton and Saint Louis. Virginia Commonwealth joined the A-10 on July 1, 2012. Although some of its members are state-funded, more than half of its membership is made up of private, Catholic institutions. Despite the name, there are 13 full-time members, and two affiliate members that participate in women's field hockey only.