| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Guy Woodhouse | Kavanagh College | 23.45q |
| 2 | Ryan Williams | Ashburton College | 23.47q |
| 3 | Alistair McIntyre | Christchurch Boys High School | 23.52q |
| 4 | Callum Bell | Kaiapoi High School | 24.05q |
| 5 | Harlem Cole | Roncalli College | 24.71q |
| 6 | Zeb Laqekoro | Bayfield High School | 25.23 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Tim Lawrence | Otago Boys High School | 23.71q |
| 2 | Alistair Adams | Nelson College | 24.17q |
| 3 | Daniel Lastovicka | Otago Boys High School | 24.73q |
| 4 | Sam Anderson | Southland Boys High School | 25.36 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Guy Woodhouse | Kavanagh College | 22.65 |
| 2 | Tim Lawrence | Otago Boys High School | 23.15 |
| 3 | Ryan Williams | Ashburton College | 23.38 |
| 4 | Alistair McIntyre | Christchurch Boys High School | 23.49 |
| 5 | Alistair Adams | Nelson College | 23.96 |
| 6 | Daniel Lastovicka | Otago Boys High School | 24.68 |
| 7 | Callum Bell | Kaiapoi High School | 24.70 |
| -- | Harlem Cole | Roncalli College | DNS |