| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Dillon Todd | Otago Boys High School | 55.39q |
| 2 | Chad Butson | Southland Boys High School | 56.38q |
| 3 | Albert Adcock | Christchurch Boys High School | 58.22q |
| 4 | Robere Hall | Kings High School | 58.85q |
| 5 | Tony Wood | Waimate High School | 59.56 |
| Placing | Athlete | Team | Preliminaries |
|---|---|---|---|
| 1 | Tomi Obafemi | Ashburton College | 57.07q |
| 2 | Kieran Hunter | Taieri College | 57.84q |
| 3 | Ben Evans | St Bede's College | 58.20q |
| 4 | Jack Morrison | Christchurch Boys High School | 58.38q |
| Placing | Athlete | Team | Finals |
|---|---|---|---|
| 1 | Chad Butson | Southland Boys High School | 52.74 |
| 2 | Tomi Obafemi | Ashburton College | 53.79 |
| 3 | Dillon Todd | Otago Boys High School | 55.53 |
| 4 | Kieran Hunter | Taieri College | 56.93 |
| 5 | Albert Adcock | Christchurch Boys High School | 57.36 |
| 6 | Ben Evans | St Bede's College | 57.95 |
| 7 | Jack Morrison | Christchurch Boys High School | 59.87 |
| 8 | Robere Hall | Kings High School | 1:00.92 |