The graduation rate calculations for Grand Canyon University are influenced heavily by its unique institutional model, which serves an exceptionally large population of online working adult learners alongside traditional undergraduate students on its main Phoenix campus. Because online students frequently balance full-time careers, family obligations, and part-time course loads, their time-to-completion metrics stretch across extended multi-year timeframes. Traditional four-year graduation rate formulas do not fully capture the persistence and ultimate success of non-traditional and working adult student populations enrolled in distance education programs.