| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | AJ Madondo | Christ's College | 23.42q |
| 2 | Rylan Cooper | Central Southland College | 23.62q |
| 3 | Thomas McKenzie | Mt Hutt College | 23.76q |
| 4 | Ollie Singleton | Christchurch Boys High School | 24.01q |
| 5 | Sacha Tahi | Christchurch Boys High School | 24.05q |
| 6 | Matthew Botting | Mt Aspiring College | 24.16 |
| 7 | Sam Chapman | Otago Boys High School | 25.11 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Joesph Nash | Christ's College | 22.89q |
| 2 | Seb Ferro | John McGlashan College | 23.61q |
| 3 | Millar McElrea | John McGlashan College | 23.93q |
| 4 | Tom Swales | Kaiapoi High School | 24.20 |
| 5 | Owain Harris | Otago Boys High School | 24.53 |
| 6 | Louis Pienaar | James Hargest College | 25.04 |
| 7 | Ivan Temple | Fiordland College | 27.50 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | AJ Madondo | Christ's College | 21.93 |
| 2 | Joesph Nash | Christ's College | 22.20 |
| 3 | Seb Ferro | John McGlashan College | 22.52 |
| 4 | Millar McElrea | John McGlashan College | 23.22 |
| 5 | Sacha Tahi | Christchurch Boys High School | 23.22 |
| 6 | Thomas McKenzie | Mt Hutt College | 23.40 |
| 7 | Rylan Cooper | Central Southland College | 23.41 |
| 8 | Ollie Singleton | Christchurch Boys High School | 23.55 |