| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| -- | James Hindle | Otago Boys High School | q |
| -- | Hayden McCabe | Burnside High School | q |
| -- | Ant McLellan | Kavanagh College | q |
| -- | Seita Nishimura | Lincoln High School | |
| -- | Thomas Ward | Timaru Boys' High School | q |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| -- | James Goodwin | Gore High School | |
| -- | Robert Musgrave | Riccarton High School | q |
| -- | Wiremu Shore | Timaru Boys' High School | q |
| -- | Richie Thomas | Roncalli College | q |
| -- | D Williamson | Kings High School | q |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Robert Musgrave | Riccarton High School | 15.44 |
| 2 | Ant McLellan | Kavanagh College | 15.66 |
| 3 | James Hindle | Otago Boys High School | 16.49 |
| 4 | Hayden McCabe | Burnside High School | 16.65 |
| 5 | Thomas Ward | Timaru Boys' High School | 18.24 |
| 6 | Wiremu Shore | Timaru Boys' High School | 18.92 |
| 7 | Richie Thomas | Roncalli College | 19.26 |
| -- | D Williamson | Kings High School | DQ |