Part-time MBA programs, designed specifically for the busy, early-to-mid-career working professional, are for many Americans what first comes to mind at the mention of "going to business school." In recent years the overall demand for part-time MBA programs in the United States appears to have stagnated. Since 2009, each year most programs have reported either down or flat application volumes. Through a wide-ranging examination of Graduate Management Admission Council® (GMAC®) data, this paper explores this apparent stagnation; highlights shifting candidate needs and approaches some programs have taken to innovate; evaluates the current part-time MBA value proposition; and identifies opportunities and strategies for US part-time MBA programs to stay relevant and plan for their programs' sustainable futures.