| 2011 | Cerdon College | Merrylands | English Extension 1 | 4 |
| 2012 | Chatswood High School | Chatswood | English (Advanced) | 4 |
| 2013 | Chatswood High School | Chatswood | Society and Culture | 4 |
| 2014 | Cheltenham Girls High School | Beecroft | Design and Technology | 4 |
| 2015 | Cheltenham Girls High School | Beecroft | Economics | 4 |
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| 2016 | Cheltenham Girls High School | Beecroft | General Mathematics | 4 |
| 2017 | Cherrybrook Technology High School | Cherrybrook | Accounting | 4 |
| 2018 | Cherrybrook Technology High School | Cherrybrook | Earth and Environmental Science | 4 |
| 2019 | Cherrybrook Technology High School | Cherrybrook | English Extension 2 | 4 |
| 2020 | Cherrybrook Technology High School | Cherrybrook | Japanese Beginners | 4 |
| 2021 | Chester Hill High School | Chester Hill | Mathematics | 4 |
| 2022 | Chevalier College | Burradoo | English Extension 1 | 4 |
| 2023 | Chevalier College | Burradoo | Visual Arts | 4 |
| 2024 | Christadelphian Heritage College Sydney | Kemps Creek | Music 1 | 4 |
| 2025 | Christian Brothers High School Lewisham | Lewisham | Ancient History | 4 |
| 2026 | Christian Brothers High School Lewisham | Lewisham | Studies of Religion I | 4 |
| 2027 | Clancy Catholic College | West Hoxton | Community and Family Studies | 4 |
| 2028 | Coffs Harbour Senior College | Coffs Harbour | General Mathematics | 4 |
| 2029 | Colo High School | North Richmond | Earth and Environmental Science | 4 |
| 2030 | Concord High School | Concord | Earth and Environmental Science | 4 |
| 2031 | Conservatorium High School | Sydney | Mathematics Extension 2 | 4 |
| 2032 | Corpus Christi Catholic High School | Oak Flats | Studies of Religion I | 4 |
| 2033 | Covenant Christian School | Belrose | Mathematics Extension 1 | 4 |
| 2034 | Cranbrook School | Bellevue Hill | Economics | 4 |
| 2035 | Cumberland High School | Carlingford | Mathematics Extension 1 | 4 |
Source: NSW Education Standards Authority (NESA).
Supplementary data from school publications.
Supplementary data from school publications.
Last Updated: 14 Jan 2022