* Last updated at 8:35 am on Friday, February 26, 2021
Season summaries include titles won (and the class they were won in), final place in state, final won-lost record, and head coach for all seasons submitted by the school or gathered from IHSA records.
A few titles are missing (complete list of missing titles). Changes and additions to these records may be made by school personnel through the IHSA Schools Center.
Key to titles: Ddistrict, Rregional, Ssectional, Usuper-sectional, Qteam qualifier for state finals, PChicago Public League champion (only when an automatic qualifier to the state finals).
|Peoria (H.S.)||Q||1||17||1||Les Straesser|
|Rock Island (H.S.)||Q||2||10||5||H.E. Brown|
|Oak Park (O.P.-River Forest)||Q||3||Wilbur Hawthorne|
|Evanston (Twp.)||Q||15||5||John Bixby|
|LaSalle (L.-Peru)||Q||2||4||C.R. Pugh|
|St. Charles (H.S.)||Q|
|Hinsdale (Twp.)||DQ||1||22||3||John Snyder|
|Rock Island (H.S.)||DQ||4||11||4||Anthony Udden|
|Bloomington (H.S.)||Q||7||7||Tom O'Neill|
|Centralia (H.S.)||DQ||3||5||Cliff Bauer|
|Mt. Vernon (H.S.)||Q||12||5||W.L. Stuckey|
|Bloomington (H.S.)||DQ||1||14||2||Tom O'Neill|
|Rock Island (H.S.)||DQ||2||14||2||F.W. Gray|
|Hinsdale (Twp.)||DQ||3||18||4||John Snyder|
|Mt. Vernon (H.S.)||DQ||4||15||2||E.L. Harris|