Below is the list of the best HSC students in 2015 ranked in order of their total number of subjects awarded.
A subject award can be either a Distinguished Achiever award or a Subject Rank award (top place in subject).
Where students have equal numbers of subject awards, those with an All Rounder award are ranked higher. As additional tie-breakers, Subject Rank awards are ranked by their place value and they are also ranked higher than Distinguished Achiever awards. Where all of these measures are equal, entries are listed alphabetically.
Note that these rankings are calculated using only the published results for 2015. A student's awards from any earlier years, if any, are not not included here.
| 1 | Zhou, Andrew | Knox Grammar School | Wahroonga | 7 | Yes | |
| 2 | Rotolo-Ross, Giacomo Harold | Knox Grammar School | Wahroonga | 6 | Yes | |
| 3 | Liu, Michael Yuan Tiger | Knox Grammar School | Wahroonga | 6 | Yes | |
| 4 | Man, Chi Hon Johnson | Knox Grammar School | Wahroonga | 6 | Yes | |
| 5 | Schofield, Daniel David | Knox Grammar School | Wahroonga | 6 | Yes | |
| 6 | Skellern, Christopher James | Knox Grammar School | Wahroonga | 6 | Yes | |
| 7 | Wetmore, Luke Barber Norton | Knox Grammar School | Wahroonga | 6 | Yes | |
| 8 | White, Jarleth Warwick | Knox Grammar School | Wahroonga | 6 | Yes | |
| 9 | Allen, Daniel Taylor | Knox Grammar School | Wahroonga | 5 | Yes | |
| 10 | Boot, Ryan Hanford | Knox Grammar School | Wahroonga | 5 | Yes | |
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| 11 | Chapman, Harry James | Knox Grammar School | Wahroonga | 5 | Yes | |
| 12 | Chen, Vincent Libo | Knox Grammar School | Wahroonga | 5 | Yes | |
| 13 | Choi, Andrew Jung Hwan | Knox Grammar School | Wahroonga | 5 | Yes | |
| 14 | Comino, Alec Chris | Knox Grammar School | Wahroonga | 5 | Yes | |
| 15 | Cross, Alexander Dudley | Knox Grammar School | Wahroonga | 5 | Yes | |
| 16 | Ho, Clayton Ze Chi | Knox Grammar School | Wahroonga | 5 | Yes | |
| 17 | Lennon, Nicholas Maxwell | Knox Grammar School | Wahroonga | 5 | Yes | |
| 18 | Malek, Joshua Pishoy | Knox Grammar School | Wahroonga | 5 | Yes | |
| 19 | Walsh, Timothy | Knox Grammar School | Wahroonga | 5 | ||
| 20 | Song, Peter Zerong | Knox Grammar School | Wahroonga | 5 | ||
| 21 | Truskett, Robert Jack | Knox Grammar School | Wahroonga | 5 | ||
| 22 | Ahmed, Arslan | Knox Grammar School | Wahroonga | 4 | ||
| 23 | Appleby, Jag | Knox Grammar School | Wahroonga | 4 | ||
| 24 | Balaton, Jerson Oliver | Knox Grammar School | Wahroonga | 4 | ||
| 25 | Cole, William James | Knox Grammar School | Wahroonga | 4 | ||
| 26 | Cordier, Xavier Pierre | Knox Grammar School | Wahroonga | 4 | ||
| 27 | De Souza, Nicholas Robert | Knox Grammar School | Wahroonga | 4 | ||
| 28 | Eaton, Michael | Knox Grammar School | Wahroonga | 4 | ||
| 29 | Fay, Edward John | Knox Grammar School | Wahroonga | 4 | ||
| 30 | Kemp, Lachlan Harrison | Knox Grammar School | Wahroonga | 4 | ||
| 31 | Neave, Alexander William | Knox Grammar School | Wahroonga | 4 | ||
| 32 | Nelson, Angus Charles Lockhart | Knox Grammar School | Wahroonga | 4 | ||
| 33 | Rossettin, Owen Demetrio Kenneth | Knox Grammar School | Wahroonga | 4 | ||
| 34 | Yeo, Nicholas Zhi Guang | Knox Grammar School | Wahroonga | 4 | ||
| 35 | Butler, Rhett Morton | Knox Grammar School | Wahroonga | 3 | ||
| 36 | Baker, Joshua Robert | Knox Grammar School | Wahroonga | 3 | ||
| 37 | Bourn, Bailey James | Knox Grammar School | Wahroonga | 3 | ||
| 38 | Butterell, Nicholas Alexander | Knox Grammar School | Wahroonga | 3 | ||
| 39 | Clarke, Samuel Jack | Knox Grammar School | Wahroonga | 3 | ||
| 40 | Dave, Rishi | Knox Grammar School | Wahroonga | 3 | ||
| 41 | Drever, Keenan Sinclair | Knox Grammar School | Wahroonga | 3 | ||
| 42 | Harriott, Edward James | Knox Grammar School | Wahroonga | 3 | ||
| 43 | Jackson, Rourke George | Knox Grammar School | Wahroonga | 3 | ||
| 44 | Jeffs, Tyler William | Knox Grammar School | Wahroonga | 3 | ||
| 45 | Kim, Joshua | Knox Grammar School | Wahroonga | 3 | ||
| 46 | Knox, James Mungo | Knox Grammar School | Wahroonga | 3 | ||
| 47 | Laidlaw, Nicholas William | Knox Grammar School | Wahroonga | 3 | ||
| 48 | Lawrence, James Hamilton | Knox Grammar School | Wahroonga | 3 | ||
| 49 | Lunney, Tobias Ronald | Knox Grammar School | Wahroonga | 3 | ||
| 50 | McDermott, Timothy David | Knox Grammar School | Wahroonga | 3 | ||