Illinois continues to expressly prohibit the carrying of firearms on college campuses (including those by concealed carry weapons permit holders). This prohibition was reinforced again in 2013 with Public Act 098-0063.
Disclaimer: Policies are subject to change at any time, both during and between school years. In addition, individual school policies commonly include more details than can be succinctly captured by ArmedCampuses.org. Each school should be consulted for its most accurate, up-to-date policy.