Northern Illinois University NIU is a comprehensive research institution with a student enrollment of over 22,000. The university is composed of seven degree-granting colleges that together offer 54 undergraduate majors; 70 graduate majors; and one professional (Juris Doctor) degree. | NIU Institute for Neutron Therapy A unique and proven type of radiation, neutron therapy blends advanced medical science with cutting-edge accelerator physics developed at Fermi National Accelerator Laboratory. | NIU Prism Northern Illinois University organization; with resources and events calendar. |