I wouldn't be surprised since Northern Illinois University, Rockford Community College are both on SC 21. There was an initiative to provide SC21 radios to every College/University Police for inter operability. At one time SIU and SIUE were on VHF hi band but U of I has been on the Chamaign County 800 P25 for many years. I feel sure Chicago State University have a few SC 21 portables but I don't know if their day to day ops are on SC 21. Usually the College/ University systems show up in the Data base where the facility is located.