| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Brandon Spencer | Southland Boys High School | 23.67q |
| 2 | Jason Wright | Waitaki Boys' High School | 23.91q |
| 3 | Geoff MacIntyre | Burnside High School | 25.10q |
| 4 | Russell Bungard | St Kevin's College | 26.12 |
| -- | Tim Couprie | Middleton Grange School | DNS |
| -- | Kalum Martinus | Greymouth High School | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Ricky Litisone | Christchurch Boys High School | 23.31q |
| 2 | Cameron Baker | Otago Boys High School | 23.97q |
| 2 | Hayden Matthews | Waimate High School | 23.97q |
| 4 | Tim Manson | Christ's College | 24.72q |
| 5 | Samuel Murphy | Timaru Boys' High School | 24.76q |
| 6 | Matt Norrish | Logan Park High School | 25.48 |
| -- | Noah McErlane | St Kevin's College | DNS |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Ricky Litisone | Christchurch Boys High School | 22.81 |
| 2 | Brandon Spencer | Southland Boys High School | 23.27 |
| 3 | Hayden Matthews | Waimate High School | 23.56 |
| 4 | Cameron Baker | Otago Boys High School | 23.64 |
| 5 | Jason Wright | Waitaki Boys' High School | 23.90 |
| 6 | Tim Manson | Christ's College | 24.48 |
| 7 | Samuel Murphy | Timaru Boys' High School | 24.49 |
| 8 | Geoff MacIntyre | Burnside High School | 24.61 |