(Number Indicates Final AP Poll Ranking)
| IHSA STATE TOURNAMENT - CLASS 3A ~ 2020 | |||||
| (Season canceled 3-12-2020) | |||||
| Sectional: Semi-Final | Sectional: Final (3/13) | Super-Sectional (3/17) | Semi-Final (3/20) | Championship (3/21) | |
| 4 | Bogan | Bogan | |||
| Riverside-Brookfield | |||||
| Hinsdale South | |||||
| Hinsdale South | |||||
| Benet | |||||
| Hoffman Estates (Sears Ctr) | |||||
| 3 | Morgan Park | Morgan Park | |||
| Hillcrest | |||||
| Thornridge | |||||
| Oak Forest | Kankakee | ||||
| 7 | Kankakee | ||||
| Lanphier | Lanphier | ||||
| 6 | Lincoln | ||||
| Lincoln | |||||
| Lincoln | Lincoln | ||||
| MacArthur (Decatur) | |||||
| Springfield (Bk of Illinois Ctr) | |||||
| Marion | East St. Louis | ||||
| East St. Louis | |||||
| Mount Vernon | |||||
| Glenwood | Glenwood | ||||
| Carbondale | |||||
| PEORIA CIVIC CENTER | |||||
| Fenwick | Fenwick | IHSA Class 3A - 2020 | |||
| Westinghouse | |||||
| St. Ignatius | |||||
| 9 | DePaul | St. Ignatius | |||
| St. Ignatius | |||||
| Evanston (Northwestern) | |||||
| 2 | Notre Dame | Notre Dame | |||
| Deerfield | |||||
| Grayslake North | |||||
| St. Patrick | St. Viator | ||||
| St. Viator | |||||
| 1 | Notre Dame (Peoria | Notre Dame (Peoria) | |||
| Geneseo | |||||
| Peoria (Bradley) | |||||
| 8 | Rock Island | Manual | |||
| Manual | |||||
| DeKalb (Northern Illinois) | |||||
| St. Francis | Wauconda | ||||
| Wauconda | |||||
| Boylan | |||||
| 10 | Boylan | Hampshire | |||
| Hampshire | |||||