| 51 | Calrossy Anglican School | Tamworth | Mathematics Advanced | 2 |
| 52 | Camden Haven High School Distance Education Centre | Laurieton | Mathematics Advanced | 1 |
| 53 | Camden High School | Camden | Mathematics Advanced | 1 |
| 54 | Cammeraygal High School | Crows Nest | Mathematics Advanced | 4 |
| 55 | Canberra Grammar School | Red Hill, ACT | Mathematics Advanced | 3 |
| 56 | Canley Vale High School | Canley Vale | Mathematics Advanced | 13 |
| 57 | Canterbury Boys High School | Ashbury | Mathematics Advanced | 4 |
| 58 | Canterbury Girls High School | Canterbury | Mathematics Advanced | 1 |
| 59 | Caringbah High School | Caringbah | Mathematics Advanced | 47 |
| 60 | Carinya Christian School Tamworth | Tamworth | Mathematics Advanced | 1 |
| |
||||
| 61 | Carlingford High School | Carlingford | Mathematics Advanced | 34 |
| 62 | Caroline Chisholm College | Glenmore Park | Mathematics Advanced | 1 |
| 63 | Casimir Catholic College | Marrickville | Mathematics Advanced | 2 |
| 64 | Castle Hill High School | Castle Hill | Mathematics Advanced | 27 |
| 65 | Catherine McAuley Westmead | Westmead | Mathematics Advanced | 12 |
| 66 | Cecil Hills High School | Cecil Hills | Mathematics Advanced | 3 |
| 67 | Central Coast Grammar School | Erina Heights | Mathematics Advanced | 12 |
| 68 | Cerdon College | Merrylands | Mathematics Advanced | 4 |
| 69 | Charlton Christian College | Fassifern | Mathematics Advanced | 1 |
| 70 | Chatswood High School | Chatswood | Mathematics Advanced | 64 |
| 71 | Cheltenham Girls High School | Beecroft | Mathematics Advanced | 31 |
| 72 | Cherrybrook Technology High School | Cherrybrook | Mathematics Advanced | 37 |
| 73 | Chester Hill High School | Chester Hill | Mathematics Advanced | 1 |
| 74 | Christian Brothers High School Lewisham | Lewisham | Mathematics Advanced | 9 |
| 75 | Clancy Catholic College | West Hoxton | Mathematics Advanced | 3 |
| 76 | Coffs Harbour Christian Community School | Bonville | Mathematics Advanced | 1 |
| 77 | Coffs Harbour Senior College | Coffs Harbour | Mathematics Advanced | 1 |
| 78 | Concord High School | Concord | Mathematics Advanced | 3 |
| 79 | Condell Park High School | Condell Park | Mathematics Advanced | 3 |
| 80 | Conservatorium High School | Sydney | Mathematics Advanced | 5 |
| 81 | Corpus Christi Catholic High School | Oak Flats | Mathematics Advanced | 4 |
| 82 | Corpus Christi College | Maroubra | Mathematics Advanced | 2 |
| 83 | Corrimal High School | Corrimal | Mathematics Advanced | 1 |
| 84 | Covenant Christian School | Belrose | Mathematics Advanced | 1 |
| 85 | Cranbrook School | Bellevue Hill | Mathematics Advanced | 24 |
| 86 | Crestwood High School | Baulkham Hills | Mathematics Advanced | 2 |
| 87 | Cumberland High School | Carlingford | Mathematics Advanced | 12 |
| 88 | Danebank An Anglican School for Girls | Hurstville | Mathematics Advanced | 9 |
| 89 | Davidson High School | Frenchs Forest | Mathematics Advanced | 4 |
| 90 | De La Salle Catholic College Caringbah | Caringbah | Mathematics Advanced | 2 |
| 91 | De La Salle College Revesby Heights | Revesby Heights | Mathematics Advanced | 6 |
| 92 | Delany College | Granville | Mathematics Advanced | 2 |
| 93 | Denison College of Secondary Education Bathurst | Bathurst | Mathematics Advanced | 3 |
| 94 | Domremy College | Five Dock | Mathematics Advanced | 1 |
| 95 | Dubbo College Senior Campus | Dubbo | Mathematics Advanced | 2 |
| 96 | Dulwich High School of Visual Arts and Design | Dulwich Hill | Mathematics Advanced | 2 |
| 97 | Edmund Rice College | West Wollongong | Mathematics Advanced | 1 |
| 98 | Elderslie High School | Narellan | Mathematics Advanced | 1 |
| 99 | Elizabeth Macarthur High School | Narellan | Mathematics Advanced | 3 |
| 100 | Emanuel School | Randwick | Mathematics Advanced | 13 |