Idaho State University (ISU) is a public university operated by the U.S. state of Idaho. Its main campus is in Pocatello with outreach programs in Coeur d'Alene, Idaho Falls, Boise and Twin Falls. Enrollment for fall semester 2006 was 12,676 students, including 8,848 undergraduates.[1] ISU enrolls a large number of older, non-traditional students who live and work off-campus. ISU's enrollment shrunk from 13,977 for fall semester 2005, likely because of increased tuition costs.