Here is the combined Senior Certificate Grade leaderboard after the four preliminary rounds. The top eight teams advance to the quarter-finals. “Strength” is an indication of the strength of draw faced by teams (the number being the total number of wins of teams debated by that particular team; the higher the number, the harder the draw)
| Rank | Team | R1 | R2 | R3 | R4 | Total | Strength |
| 1 | St Mary’s College 1 | 1 | 1 | 1 | 1 | 4 | 8 |
| 2 | St Oran’s College 2 | 1 | 1 | 1 | 1 | 4 | 6 |
| 3 | Aotea College | 1 | 1 | 1 | 1 | 4 | 4 |
| 4 | St Mary’s College 2 | 0 | 1 | 1 | 1 | 3 | 9 |
| 5 | Viard College | 1 | 1 | 1 | 0 | 3 | 9 |
| 6 | HIBS 1 | 1 | 1 | 1 | 0 | 3 | 8 |
| 7 | Wellington Girls’ College 2 | 0 | 1 | 1 | 1 | 3 | 7 |
| 8 | Wellington East Girls’ College | 1 | 1 | 1 | 0 | 3 | 7 |
| 9= | Onslow College 3 | 1 | 0 | 1 | 1 | 3 | 7 |
| 9= | St Pats Silverstream | 1 | 1 | 1 | 0 | 3 | 7 |
| 11= | Chilton Saint James School 1 | 1 | 1 | 0 | 1 | 3 | 6 |
| Chilton Saint James School 2 | 0 | 1 | 1 | 1 | 3 | 6 | |
| 13 | Wellington Girls’ College 3 | 1 | 1 | 0 | 1 | 3 | 6 |
| 14 | St Patrick’s College 1 | 0 | 1 | 1 | 1 | 3 | 5 |
| 15= | Wellington Girls’ College 1 | 0 | 1 | 1 | 0 | 2 | |
| HIBS 2 | 0 | 1 | 1 | 0 | 2 | ||
| St Patrick’s College 3 | 1 | 1 | 0 | 0 | 2 | ||
| Tawa College 2 | 1 | 0 | 1 | 0 | 2 | ||
| Scots College 2 | 1 | 1 | 0 | 0 | 2 | ||
| Taita College 3 | 0 | 1 | 1 | 0 | 2 | ||
| Samuel Marsden Collegiate 1 | 1 | 0 | 1 | 0 | 2 | ||
| Kapiti College | 0 | 0 | 1 | 1 | 2 | ||
| Samuel Marsden Collegiate 3 | 1 | 0 | 0 | 1 | 2 | ||
| Samuel Marsden Collegiate 2 | 0 | 0 | 1 | 1 | 2 | ||
| Heretaunga College 1 | 1 | 0 | 1 | 0 | 2 | ||
| Onslow College 2 | 1 | 0 | 0 | 1 | 2 | ||
| Newlands College 2 | 0 | 1 | 0 | 1 | 2 | ||
| Wellington College 1 | 1 | 0 | 1 | 0 | 2 | ||
| Scots College 3 | 1 | 1 | 0 | 0 | 2 | ||
| Newlands College 1 | 1 | 0 | 0 | 1 | 2 | ||
| Taita College 2 | 0 | 1 | 0 | 1 | 2 | ||
| Taita College 1 | 1 | 0 | 0 | 1 | 2 | ||
| Wellington College 3 | 0 | 1 | 0 | 1 | 2 | ||
| St Bernard’s College | 0 | 1 | 0 | 1 | 2 | ||
| St Oran’s College 1 | 1 | 0 | 0 | 1 | 2 | ||
| 36= | Queen Margaret College | 1 | 0 | 0 | 0 | 1 | |
| Onslow College 1 | 0 | 0 | 1 | 0 | 1 | ||
| Porirua College | 1 | 0 | 0 | 0 | 1 | ||
| Sacred Heart College | 0 | 0 | 1 | 0 | 1 | ||
| St Mary’s College 3 | 0 | 1 | 0 | 0 | 1 | ||
| Scots College 1 | 0 | 0 | 1 | 0 | 1 | ||
| Tawa College 1 | 0 | 0 | 0 | 1 | 1 | ||
| St Patrick’s College 2 | 0 | 0 | 0 | 1 | 1 | ||
| Wellington College 2 | 0 | 0 | 0 | 1 | 1 | ||
| Heretaunga College 2 | 0 | 0 | 0 | 0 | 0 | ||
| Hutt Valley High School | 0 | 0 | 0 | 0 | 0 | ||
| Heretaunga College 3 | 0 | 0 | 0 | 0 | 0 |