| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Samuel Wilson | Ashburton College | 23.75q |
| 2 | Adam Jones | Marlborough Boys College | 23.87q |
| 3 | Craig Patterson | Burnside High School | 24.37q |
| 4 | Jason Redhead | Mountainview High School | 24.39q |
| 5 | Jonathan Dixon | St Bede's College | 24.91 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Craig Sneddon | Otago Boys High School | 23.54q |
| 2 | Adam Gavegan | Kavanagh College | 23.68q |
| 3 | James Small | Christ's College | 23.75q |
| 4 | Kane Lewis | Timaru Boys' High School | 24.62q |
| -- | Mathew De Groot | St Peter's College | DNS |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Craig Sneddon | Otago Boys High School | 22.87 |
| 2 | Samuel Wilson | Ashburton College | 23.10 |
| 3 | Adam Gavegan | Kavanagh College | 23.75 |
| 4 | Adam Jones | Marlborough Boys College | 23.78 |
| 5 | Jason Redhead | Mountainview High School | 24.33 |
| 6 | Craig Patterson | Burnside High School | 24.51 |
| 7 | Kane Lewis | Timaru Boys' High School | 24.90 |
| -- | James Small | Christ's College | DNS |