| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Jack Rodgers | Christchurch Boys High School | 23.58q |
| 2 | Jay Davis | Kings High School | 23.91q |
| 3 | Ben Shipley | St Bede's College | 24.03q |
| 4 | Charlie Brown | Mt Hutt College | 24.23q |
| 5 | Logan McCrae | Garin College | 25.14 |
| 6 | Tai Greive | Nelson College | 26.70 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Quinn Andis | Shirley Boys High School | 23.59q |
| 2 | John Wells | Christ's College | 23.91q |
| 3 | Calib Bone | Burnside High School | 24.01q |
| 3 | Jed Syme | Timaru Boys' High School | 24.01q |
| 5 | Ben Smith | Waitaki Boys' High School | 24.28 |
| 6 | Thomas Sullivan | John McGlashan College | 24.79 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Jack Rodgers | Christchurch Boys High School | 23.13 |
| 2 | Quinn Andis | Shirley Boys High School | 23.51 |
| 3 | John Wells | Christ's College | 23.56 |
| 4 | Calib Bone | Burnside High School | 23.65 |
| 5 | Jed Syme | Timaru Boys' High School | 24.02 |
| 6 | Ben Shipley | St Bede's College | 24.18 |
| 7 | Jay Davis | Kings High School | 24.44 |
| 8 | Charlie Brown | Mt Hutt College | 24.56 |