Headmistresses
| Period | Details |
|---|---|
| 1921 – 1923 | Bishop Charles Lawrence (Tom) Riley, CBE MC LLB DTh Cambridge |
| 1923 – 1937 | Miss Ethel H Dannatt, Maths (Hons) Oxford |
| 1938 – 1940 | Miss Katherine Cameron Carter, MBE BA Melbourne |
| 1940 – 1944 | Miss Beryl Hamilton, BA UWA, Teacher at St Mary's 1921-1940 |
| 1944 – 1956 | Mrs Elizabeth Myles, BSc (Hons) Edinburgh, Teacher at St Mary's 1942-1944 |
| 1957 – 1965 | Mrs Theresa Macdonald, MBE |
| 1965 – 1982 | Mrs Anne Symington, BA (Hons) MA Oxford |
| 1983 – 1997 | Mrs Audrey Jackson, AM BSc (Hons) Wales GCed GDEd Admin |
| 1997 – present | Mrs Lynne Thomson, BA (Hons) DipEd (UWA) EdM (Harvard) FACE |
Read more about this topic: St Mary's Anglican Girls' School