| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Sione Pulu | Waitaki Boys' High School | 17.27q |
| 2 | Brad Riddell | Christchurch Boys High School | 17.54q |
| 3 | Ben Kerkhofs | St Bede's College | 17.76q |
| 4 | Teryn McLaren | Kings High School | 18.41 |
| -- | Troy Tapara | Timaru Boys' High School | DNS |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Cameron Richards | Nelson College | 16.90q |
| 2 | Phillip Butler | Waimate High School | 17.35q |
| 3 | Leslie Taylor | Otago Boys High School | 17.49q |
| 4 | Peter Ellis | St Bede's College | 17.58q |
| 5 | Gus Kerr | Dunstan High School | 17.80q |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Cameron Richards | Nelson College | 16.38 |
| 2 | Phillip Butler | Waimate High School | 16.98 |
| 2 | Sione Pulu | Waitaki Boys' High School | 16.98 |
| 4 | Ben Kerkhofs | St Bede's College | 17.36 |
| 5 | Brad Riddell | Christchurch Boys High School | 17.51 |
| 6 | Gus Kerr | Dunstan High School | 17.60 |
| 7 | Leslie Taylor | Otago Boys High School | 17.62 |
| 8 | Peter Ellis | St Bede's College | 18.18 |