| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Conan Moynihan | St Bede's College | 23.90q |
| 2 | Richard Ford | Timaru Boys' High School | 24.60q |
| 3 | Matt Wilson | Dunstan High School | 24.95q |
| 4 | Scott Paulin | Dunstan High School | 25.16 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Matthew Robinson | Southland Boys High School | 23.53q |
| 2 | David Bennett | Timaru Boys' High School | 23.72q |
| 3 | William Lentjes | Christchurch Boys High School | 23.79q |
| 4 | Alex Emmerson | Otago Boys High School | 24.47q |
| 5 | Taylor Fiddes | Taieri College | 25.03q |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Matthew Robinson | Southland Boys High School | 22.71 |
| 2 | William Lentjes | Christchurch Boys High School | 23.17 |
| 3 | David Bennett | Timaru Boys' High School | 23.45 |
| 4 | Conan Moynihan | St Bede's College | 23.62 |
| 5 | Richard Ford | Timaru Boys' High School | 24.46 |
| 6 | Alex Emmerson | Otago Boys High School | 24.63 |
| 7 | Matt Wilson | Dunstan High School | 24.94 |
| -- | Taylor Fiddes | Taieri College | DNS |