| 1909 | Chicago (Englewood) and Oak Park (O.P.-River Forest) tie 1-1 in first known soccer match between two Illinois high schools. |
| 1972 | First IHSA state soccer tournament held at Hancock Stadium on the campus of Illinois State University in Normal. |
| 1997 | Tournament split into two classes, the first sport to divide along the 50-50 split recommended by the Ad Hoc Committee (previously, the traditional 65-35 split had been used); Springfield (H.S.) wins Class A tournament held at Southern Illinois University at Edwardsville; Palatine (Fremd) wins Class AA tournament. |