| 51 | Canley Vale High School | Canley Vale | Mathematics Extension 1 | 17 |
| 52 | Canterbury Boys High School | Ashbury | Mathematics Extension 1 | 3 |
| 53 | Canterbury Girls High School | Canterbury | Mathematics Extension 1 | 4 |
| 54 | Caringbah High School | Caringbah | Mathematics Extension 1 | 29 |
| 55 | Carinya Christian School Tamworth | Tamworth | Mathematics Extension 1 | 1 |
| 56 | Carlingford High School | Carlingford | Mathematics Extension 1 | 30 |
| 57 | Caroline Chisholm College | Glenmore Park | Mathematics Extension 1 | 1 |
| 58 | Carroll College | Broulee | Mathematics Extension 1 | 1 |
| 59 | Casimir Catholic College | Marrickville | Mathematics Extension 1 | 2 |
| 60 | Castle Hill High School | Castle Hill | Mathematics Extension 1 | 4 |
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| 61 | Catherine McAuley Westmead | Westmead | Mathematics Extension 1 | 5 |
| 62 | Cecil Hills High School | Cecil Hills | Mathematics Extension 1 | 4 |
| 63 | Central Coast Grammar School | Erina Heights | Mathematics Extension 1 | 1 |
| 64 | Cerdon College | Merrylands | Mathematics Extension 1 | 2 |
| 65 | Champagnat Catholic College | Maroubra | Mathematics Extension 1 | 1 |
| 66 | Chatswood High School | Chatswood | Mathematics Extension 1 | 21 |
| 67 | Cheltenham Girls High School | Beecroft | Mathematics Extension 1 | 23 |
| 68 | Cherrybrook Technology High School | Cherrybrook | Mathematics Extension 1 | 36 |
| 69 | Chester Hill High School | Chester Hill | Mathematics Extension 1 | 2 |
| 70 | Chevalier College | Burradoo | Mathematics Extension 1 | 3 |
| 71 | Christian Brothers High School Lewisham | Lewisham | Mathematics Extension 1 | 7 |
| 72 | Cobar High School | Cobar | Mathematics Extension 1 | 1 |
| 73 | Coffs Harbour Christian Community School | Bonville | Mathematics Extension 1 | 3 |
| 74 | Coffs Harbour High School | Coffs Harbour | Mathematics Extension 1 | 1 |
| 75 | Colo High School | North Richmond | Mathematics Extension 1 | 1 |
| 76 | Concord High School | Concord | Mathematics Extension 1 | 11 |
| 77 | Coolamon Central School | Coolamon | Mathematics Extension 1 | 1 |
| 78 | Cootamundra High School | Cootamundra | Mathematics Extension 1 | 2 |
| 79 | Cornell High School | Surry Hills | Mathematics Extension 1 | 1 |
| 80 | Corowa High School | Corowa | Mathematics Extension 1 | 2 |
| 81 | Covenant Christian School | Belrose | Mathematics Extension 1 | 3 |
| 82 | Cowra High School | Cowra | Mathematics Extension 1 | 1 |
| 83 | Cranbrook School | Bellevue Hill | Mathematics Extension 1 | 31 |
| 84 | Cranebrook High School | Cranebrook | Mathematics Extension 1 | 1 |
| 85 | Crestwood High School | Baulkham Hills | Mathematics Extension 1 | 5 |
| 86 | Cumberland High School | Carlingford | Mathematics Extension 1 | 4 |
| 87 | Danebank An Anglican School for Girls | Hurstville | Mathematics Extension 1 | 7 |
| 88 | De La Salle Catholic College Cronulla | Cronulla | Mathematics Extension 1 | 1 |
| 89 | De La Salle College Ashfield | Ashfield | Mathematics Extension 1 | 4 |
| 90 | De La Salle College Revesby Heights | Revesby Heights | Mathematics Extension 1 | 6 |
| 91 | Domremy College | Five Dock | Mathematics Extension 1 | 1 |
| 92 | Dorrigo High School | Dorrigo | Mathematics Extension 1 | 1 |
| 93 | Dubbo Christian School | Dubbo | Mathematics Extension 1 | 1 |
| 94 | Dungog High School | Dungog | Mathematics Extension 1 | 1 |
| 95 | Duval High School | Armidale | Mathematics Extension 1 | 3 |
| 96 | East Hills Boys High School | Panania | Mathematics Extension 1 | 8 |
| 97 | East Hills Girls Technology High School | Panania | Mathematics Extension 1 | 2 |
| 98 | Emanuel School | Randwick | Mathematics Extension 1 | 3 |
| 99 | Engadine High School | Engadine | Mathematics Extension 1 | 1 |
| 100 | Epping Boys High School | Eastwood | Mathematics Extension 1 | 20 |
Source: NSW Education Standards Authority (NESA).
Supplementary data from school publications.
Supplementary data from school publications.
Last Updated: 17 Feb 2023