| Lane | Team | Squad | Seed | Note |
|---|---|---|---|---|
| 1 | Chicago (Little Village) | A | NT | |
| 2 | Chicago (King) | A | NT | |
| 3 | Chicago (Cristo Rey Jesuit) | A | NT | |
| 4 | Johnson College Prep | A | NT | |
| 5 | Chicago (CICS/Ellison) | A | NT | |
| 6 | South Shore Int'l Prep | B | NT | |
| 7 | Chicago Military | A | NT |
| Lane | Team | Squad | Seed | Note |
|---|---|---|---|---|
| 1 | Pritzker | A | DNS | |
| 2 | Chicago (Hancock) | A | 1:04.46 | |
| 4 | South Shore Int'l Prep | A | 51.00 | |
| 5 | Chicago (Providence-St. Mel) | A | 54.52 | |
| 6 | Chicago (Sullivan) | A | 1:00.00 | |
| 7 | Chicago (Kennedy) | A | DNS | |
| 8 | Chicago (Washington) | A | 1:12.28 |