20 ILCS 435/4
As used in this Act the term "state agency" means and includes all boards, commissions, agencies, institutions, authorities, bodies politic and corporate of the State created by or pursuant to the constitution or statute, of the executive branch of State government; However, such term does not include colleges, universities and institutions under the jurisdiction of the Board of Trustees of the University of Illinois, the Board of Trustees of Southern Illinois University, the Board of Trustees of Chicago State University, the Board of Trustees of Eastern Illinois University, the Board of Trustees of Governors State University, the Board of Trustees of Illinois State University, the Board of Trustees of Northeastern Illinois University, the Board of Trustees of Northern Illinois University, the Board of Trustees of Western Illinois University, the Board of Higher Education, or the Illinois Community College Board.
20 ILCS 435/4