| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | James Hindle | Otago Boys High School | 15.10q |
| 2 | HAYDEN MCCABE | Burnside High School | 15.90q |
| 3 | Richard Thomas | Roncalli College | 16.50q |
| 4 | GUY CARTWRIGHT | Christ's College | 17.40q |
| 5 | Kam Yang | Nelson College | 17.80 |
| 6 | Graeme Porter | Nayland College | 18.20 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Robert Musgrave | Riccarton High School | 14.44q |
| 2 | Nathan Baxter | Shirley Boys High School | 15.78q |
| 3 | J Goodwin | Gore High School | 16.00q |
| 4 | Ivan McCauley | Timaru Boys' High School | 17.54q |
| -- | R Taylor | Central Southland College | DNS |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Robert Musgrave | Riccarton High School | 14.57 |
| 2 | James Hindle | Otago Boys High School | 15.38 |
| 3 | Nathan Baxter | Shirley Boys High School | 15.62 |
| 4 | HAYDEN MCCABE | Burnside High School | 15.98 |
| 5 | J Goodwin | Gore High School | 16.06 |
| 6 | GUY CARTWRIGHT | Christ's College | 16.62 |
| 7 | Ivan McCauley | Timaru Boys' High School | 17.06 |
| 8 | Richard Thomas | Roncalli College | 17.14 |