The migration of Illinois students and residence of Illinois enrollees are examined on the undergraduate, graduate and professional level in both public and private institutions. Results indicate the migration of Illinois residents to the public and private institutions of other states in larger than the migration of residents of other states into Illinois institutions. At the graduate and professional level, the migration of nonresidents into Illinois public institutions is offset by approximately equal migration of Illinois residents into the public institutions of other states. In the private sector, about twice as many graduate and professional students migrate into Illinois institutions than do Illinois residents migrate to private institutions in other states. Appendices include charts representative of enrollment and migration patterns. (MJM)