| 51 | Catherine McAuley Westmead | Westmead | Mathematics Extension 1 | 3 |
| 52 | Cecil Hills High School | Cecil Hills | Mathematics Extension 1 | 4 |
| 53 | Central Coast Adventist School | Erina | Mathematics Extension 1 | 1 |
| 54 | Central Coast Grammar School | Erina Heights | Mathematics Extension 1 | 2 |
| 55 | Cerdon College | Merrylands | Mathematics Extension 1 | 5 |
| 56 | Champagnat Catholic College | Maroubra | Mathematics Extension 1 | 1 |
| 57 | Chatswood High School | Chatswood | Mathematics Extension 1 | 20 |
| 58 | Cheltenham Girls High School | Beecroft | Mathematics Extension 1 | 22 |
| 59 | Cherrybrook Technology High School | Cherrybrook | Mathematics Extension 1 | 35 |
| 60 | Chester Hill High School | Chester Hill | Mathematics Extension 1 | 3 |
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| 61 | Chevalier College | Burradoo | Mathematics Extension 1 | 2 |
| 62 | Christian Brothers High School Lewisham | Lewisham | Mathematics Extension 1 | 6 |
| 63 | Clancy Catholic College | West Hoxton | Mathematics Extension 1 | 1 |
| 64 | Clement College | Cabramatta | Mathematics Extension 1 | 3 |
| 65 | Coffs Harbour Senior College | Coffs Harbour | Mathematics Extension 1 | 3 |
| 66 | Colo High School | North Richmond | Mathematics Extension 1 | 2 |
| 67 | Concord High School | Concord | Mathematics Extension 1 | 5 |
| 68 | Conservatorium High School | Sydney | Mathematics Extension 1 | 3 |
| 69 | Coolamon Central School | Coolamon | Mathematics Extension 1 | 1 |
| 70 | Corpus Christi Catholic High School | Oak Flats | Mathematics Extension 1 | 2 |
| 71 | Covenant Christian School | Belrose | Mathematics Extension 1 | 4 |
| 72 | Cowra High School | Cowra | Mathematics Extension 1 | 1 |
| 73 | Cranbrook School | Bellevue Hill | Mathematics Extension 1 | 21 |
| 74 | Cranebrook High School | Cranebrook | Mathematics Extension 1 | 1 |
| 75 | Cumberland High School | Carlingford | Mathematics Extension 1 | 2 |
| 76 | Danebank An Anglican School for Girls | Hurstville | Mathematics Extension 1 | 6 |
| 77 | Davidson High School | Frenchs Forest | Mathematics Extension 1 | 1 |
| 78 | De La Salle Catholic College Cronulla | Cronulla | Mathematics Extension 1 | 4 |
| 79 | De La Salle College Ashfield | Ashfield | Mathematics Extension 1 | 2 |
| 80 | De La Salle College Revesby Heights | Revesby Heights | Mathematics Extension 1 | 1 |
| 81 | Delany College | Granville | Mathematics Extension 1 | 1 |
| 82 | Denison College of Secondary Education Bathurst | Bathurst | Mathematics Extension 1 | 1 |
| 83 | Dorrigo High School | Dorrigo | Mathematics Extension 1 | 1 |
| 84 | Dubbo Christian School | Dubbo | Mathematics Extension 1 | 1 |
| 85 | Dubbo College Senior Campus | Dubbo | Mathematics Extension 1 | 1 |
| 86 | Duval High School | Armidale | Mathematics Extension 1 | 2 |
| 87 | East Hills Boys High School | Panania | Mathematics Extension 1 | 5 |
| 88 | East Hills Girls Technology High School | Panania | Mathematics Extension 1 | 1 |
| 89 | Edmund Rice College | West Wollongong | Mathematics Extension 1 | 2 |
| 90 | Elderslie High School | Narellan | Mathematics Extension 1 | 1 |
| 91 | Elizabeth Macarthur High School | Narellan | Mathematics Extension 1 | 1 |
| 92 | Emanuel School | Randwick | Mathematics Extension 1 | 8 |
| 93 | Emmanuel Anglican College | Ballina | Mathematics Extension 1 | 2 |
| 94 | Epping Boys High School | Eastwood | Mathematics Extension 1 | 28 |
| 95 | Fairvale High School | Fairfield West | Mathematics Extension 1 | 10 |
| 96 | Fort Street High School | Petersham | Mathematics Extension 1 | 59 |
| 97 | Freeman Catholic College | Bonnyrigg Heights | Mathematics Extension 1 | 7 |
| 98 | Georges River College Oatley Senior Campus | Oatley | Mathematics Extension 1 | 17 |
| 99 | Georges River Grammar | Georges Hall | Mathematics Extension 1 | 1 |
| 100 | Gilroy Catholic College | Castle Hill | Mathematics Extension 1 | 6 |
Source: NSW Education Standards Authority (NESA).
Supplementary data from school publications.
Supplementary data from school publications.
Last Updated: 14 Feb 2023