| 301 | St Clares College | Waverley | Mathematics Advanced | 5 |
| 302 | St Clares High School | Taree | Mathematics Advanced | 3 |
| 303 | St Columba Anglican School | Port Macquarie | Mathematics Advanced | 3 |
| 304 | St Columbas Catholic College | Springwood | Mathematics Advanced | 3 |
| 305 | St Dominics College | Kingswood | Mathematics Advanced | 1 |
| 306 | St Edwards Christian Brothers College | East Gosford | Mathematics Advanced | 4 |
| 307 | St Euphemia College | Bankstown | Mathematics Advanced | 2 |
| 308 | St Francis Catholic College | Edmondson Park | Mathematics Advanced | 7 |
| 309 | St Francis Xaviers College | Hamilton | Mathematics Advanced | 6 |
| 310 | St George Christian School | Hurstville | Mathematics Advanced | 11 |
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| 311 | St George Girls High School | Kogarah | Mathematics Advanced | 22 |
| 312 | St Gregorys College Campbelltown | Gregory Hills | Mathematics Advanced | 1 |
| 313 | St Ignatius College | Lane Cove | Mathematics Advanced | 40 |
| 314 | St Ives High School | St Ives | Mathematics Advanced | 17 |
| 315 | St John Bosco College | Engadine | Mathematics Advanced | 1 |
| 316 | St John Paul College | Coffs Harbour | Mathematics Advanced | 1 |
| 317 | St John XXIII Catholic College Secondary | Stanhope Gardens | Mathematics Advanced | 10 |
| 318 | St Johns Park High School | St Johns Park | Mathematics Advanced | 4 |
| 319 | St Josephs Catholic High School | Albion Park | Mathematics Advanced | 2 |
| 320 | St Josephs College Hunters Hill | Hunters Hill | Mathematics Advanced | 22 |
| 321 | St Josephs College Lochinvar | Lochinvar | Mathematics Advanced | 1 |
| 322 | St Josephs Regional College | Port Macquarie | Mathematics Advanced | 2 |
| 323 | St Leos Catholic College | Wahroonga | Mathematics Advanced | 3 |
| 324 | St Lukes Grammar School | Dee Why | Mathematics Advanced | 17 |
| 325 | St Marks Coptic Orthodox College | Wattle Grove | Mathematics Advanced | 4 |
| 326 | St Marouns College | Marrickville | Mathematics Advanced | 3 |
| 327 | St Mary and St Minas Coptic Orthodox College | Rockdale | Mathematics Advanced | 3 |
| 328 | St Mary Star of the Sea College | Wollongong | Mathematics Advanced | 5 |
| 329 | St Marys Cathedral College | Sydney | Mathematics Advanced | 6 |
| 330 | St Marys Catholic College Gateshead | Gateshead | Mathematics Advanced | 3 |
| 331 | St Marys College | Gunnedah | Mathematics Advanced | 1 |
| 332 | St Marys Senior High School | St Marys | Mathematics Advanced | 8 |
| 333 | St Patricks College Strathfield | Strathfield | Mathematics Advanced | 33 |
| 334 | St Patricks College Sutherland | Sutherland | Mathematics Advanced | 6 |
| 335 | St Patricks Marist College | Dundas | Mathematics Advanced | 13 |
| 336 | St Pauls Catholic College Booragul | Booragul | Mathematics Advanced | 2 |
| 337 | St Pauls Catholic College Greystanes | Greystanes | Mathematics Advanced | 2 |
| 338 | St Pauls Catholic College Manly | Manly | Mathematics Advanced | 1 |
| 339 | St Pauls Grammar School | Cranebrook | Mathematics Advanced | 1 |
| 340 | St Philips Christian College Newcastle | Waratah | Mathematics Advanced | 5 |
| 341 | St Pius X College | Chatswood | Mathematics Advanced | 12 |
| 342 | St Scholasticas College Glebe Point | Glebe Point | Mathematics Advanced | 9 |
| 343 | St Spyridon College Senior School | Maroubra | Mathematics Advanced | 9 |
| 344 | St Ursulas College | Kingsgrove | Mathematics Advanced | 15 |
| 345 | St Vincents College | Potts Point | Mathematics Advanced | 7 |
| 346 | St Vincents College Ashfield | Ashfield | Mathematics Advanced | 2 |
| 347 | Stella Maris College | Manly | Mathematics Advanced | 8 |
| 348 | Strathfield Girls High School | Strathfield | Mathematics Advanced | 18 |
| 349 | Sydney Boys High School | Moore Park | Mathematics Advanced | 123 |
| 350 | Sydney Distance Education High School | Woolloomooloo | Mathematics Advanced | 2 |