| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Mark Innes | Otago Boys High School | 54.32q |
| 2 | Callum Eathorne | Christchurch Boys High Sc | 54.47q |
| 3 | Mark Coleman | Shirley Boys High School | 55.12q |
| 4 | Robert Mills | Christ's College | 55.33q |
| 5 | Jonathon Leask | Mt Hutt College | 59.05 |
| -- | Kalifi Fangupo | Waitaki Boys' High School | DQ |
| -- | Jonathan Leach | Marlborough Boys College | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Jason Redhead | Mountainview High School | 54.56q |
| 2 | Michael Christmas | James Hargest High School | 54.97q |
| 3 | Joshua McGettigan | St Bede's College | 55.18q |
| 4 | Nathan Baxter | Shirley Boys High School | 55.74q |
| 5 | Leighton Bill | Westland High School | 55.89 |
| 6 | J Spooner | Kings High School | 57.31 |
| 7 | Daniel Murray | Otago Boys High School | 58.03 |
| 8 | Chris O'Neill | St Kevin's College | 58.07 |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Michael Christmas | James Hargest High School | 51.84 |
| 2 | Jason Redhead | Mountainview High School | 52.30 |
| 3 | Joshua McGettigan | St Bede's College | 52.61 |
| 4 | Mark Innes | Otago Boys High School | 52.69 |
| 5 | Nathan Baxter | Shirley Boys High School | 53.16 |
| 6 | Callum Eathorne | Christchurch Boys High Sc | 53.30 |
| 7 | Mark Coleman | Shirley Boys High School | 54.35 |
| 8 | Robert Mills | Christ's College | 55.82 |