Editor's Note: A chart accompanying this article has been revised to reflect the following correction, which appears in Sunday's print edition: Because of a reporter's error, Georgia Southern University's six-year graduation rates were incorrect in a chart accompanying a front-page article in Saturday's edition. The correct graduation rates are 45 percent in 2007 and 45 percent in 2010. A revised chart reflecting the correct information appears with the second article in the two-part series in today's edition.