| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Jacob Matson | Roncalli College | 22.85q |
| 2 | Faletui Samuelu | Christchurch Boys High School | 23.77q |
| 3 | Jonas Kale | Nayland College | 24.14q |
| 4 | Sam Stewart | James Hargest High School | 24.31q |
| 5 | Alex Mander | Mairehau High School | 26.41 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Dean van der Busse | Shirley Boys High School | 24.41q |
| 2 | Jordan Pinnock | Greymouth High School | 24.58q |
| 3 | Armstrong Beedles | Kaiapoi High School | 24.62q |
| 4 | Rory O'Neill | Kavanagh College | 24.64q |
| 5 | Edze Bierema | Ashburton College | 25.17 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Jacob Matson | Roncalli College | 22.99 |
| 2 | Faletui Samuelu | Christchurch Boys High School | 23.73 |
| 3 | Dean van der Busse | Shirley Boys High School | 24.03 |
| 4 | Jonas Kale | Nayland College | 24.10 |
| 5 | Sam Stewart | James Hargest High School | 24.30 |
| 6 | Jordan Pinnock | Greymouth High School | 24.46 |
| 7 | Armstrong Beedles | Kaiapoi High School | 24.81 |
| 8 | Rory O'Neill | Kavanagh College | 25.17 |