This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2020, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 1018 | Sayers, Lily Iris | SA | Merit | Modern History | |
| 1019 | Scamoni, Christian | SA | Merit | Digital Communication Solutions | |
| 1020 | Schenk, Kurt Tyler | SA | Merit | Outdoor Education | |
| 1021 | Schubert, Greer Raelene | SA | Merit | Health | |
| 1022 | Schultz, Henry Walden | SA | Merit | Integrated Learning A | |
| 1023 | Schultz, Henry Walden | SA | Merit | Research Project B | |
| 1024 | Schultz, Lucas | SA | Merit | Material Solutions | |
| 1025 | Schwerdt, Ethan Christopher | SA | Merit | Research Project B | |
| 1026 | Scinto, Angelica | SA | Merit | English | |
| 1027 | Scipioni, Tahlia Laura | SA | Merit | General Mathematics | |
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| 1028 | Scipioni, Tahlia Laura | SA | Merit | Physical Education | |
| 1029 | Scipioni, Tahlia Laura | SA | Merit | Research Project B | |
| 1030 | Scott, Abby | SA | Merit | Religion Studies | |
| 1031 | Scott, Nicole | SA | Merit | Tourism | |
| 1032 | Scroop, Lucas | SA | Merit | Japanese (Continuers) | |
| 1033 | Searle, Grace Emily | SA | Merit | Research Project B | |
| 1034 | Seifert, Connor William | SA | Merit | Mathematical Methods | |
| 1035 | Sellvakumaran, Sidhaarath | Westminster School | Marion | Gov of SA Excellence in Modified SACE Award | |
| 1036 | Selva-Nayagam, Vijay Kumar | SA | Merit | Research Project B | |
| 1037 | Selvanayagam, William Balarajah | SA | Merit | Mathematical Methods | |
| 1038 | Semenov, Lucy | SA | Merit | Psychology | |
| 1039 | Sentschuk, Samuel | SA | Merit | English Literary Studies | |
| 1040 | Seppelt, Grace Margaret | SA | Merit | Workplace Practices | |
| 1041 | Sexton, Hannah Claire | SA | Merit | English | |
| 1042 | Shacklock, Oliver Henry Alfred | SA | Merit | Mathematical Methods | |
| 1043 | Shah, Aneri Kartik | SA | Merit | Business Innovation | |
| 1044 | Shah, Jheel Jayant | SA | Merit | English as an Additional Language | |
| 1045 | Shah, Sanjhi | SA | Merit | Essential Mathematics | |
| 1046 | Sharp, Joshua | SA | Merit | Integrated Learning A | |
| 1047 | Sharp, Joshua | SA | Merit | Physics | |
| 1048 | Shearer, Isabel | SA | Merit | Physical Education | |
| 1049 | Shepherdson, Teliah Jade | SA | Merit | Food and Hospitality | |
| 1050 | Shin, Dongwoo | SA | Merit | Mathematical Methods | |
| 1051 | Short, Alexandra | SA | Merit | English | |
| 1052 | Shum, Wai Lik (Adrian) | SA | Merit | Research Project B | |
| 1053 | Sibley, Emily | SA | Merit | General Mathematics | |
| 1054 | Silva, Samoda Lakdini | SA | Merit | Society and Culture | |
| 1055 | Simionato, Nicholas Anthony | SA | Merit | Research Project B | |
| 1056 | Simpson, Annabelle | SA | Merit | Essential Mathematics | |
| 1057 | Simpson, Ella Grace | SA | Merit | Material Solutions | |
| 1058 | Simpson, Marli Allanson | SA | Merit | English | |
| 1059 | Simpson, Rhiannon | SA | Merit | General Mathematics | |
| 1060 | Simpson, Toby | SA | Merit | General Mathematics | |
| 1061 | Singh, Yuvraj Achal | SA | Merit | Accounting | |
| 1062 | Singh, Yuvraj Achal | SA | Merit | General Mathematics | |
| 1063 | Singleton, Patrick Michael | SA | Merit | Modern History | |
| 1064 | Sinhal, Shrey | St Peters College | St Peters | Prize: Australian Institute of Physics Prize - Bronze Bragg Medal | Physics |
| 1065 | Sinhal, Shreyans | SA | Merit | Chemistry | |
| 1066 | Sinhal, Shreyans | SA | Merit | Mathematical Methods | |
| 1067 | Sinhal, Shreyans | SA | Merit | Physics | |