| Sinclair, Heather Margaret | East Victoria Park Primary School IA | Mistress (Teacher) | 1976 |
| Sinclair, Heather Margaret | East Victoria Park Primary School | Mistress (Teacher) | 1977 |
| Sinclair, Heather Margaret | East Vic Park Primary School | Mistress (Teacher) | 1978 |
| Sinclair, Heather Margaret | East Vic. Park Primary School | Mistress (Teacher) | 1979 |
| Sinclair, Irma | Balingup Primary School | Mistress (Teacher) on Probation | 1957 |
| Sinclair, Irma | Osborne Park Primary Class I | Mistress (Teacher) on Probation | 1958 |
| Sinclair, Jean | Wagin IV | Senior Monitor | 1906 |
| Sinclair, Jean | Wagin IV | Assistant Teacher (on leave) | 1911 |
| Sinclair, Jean | Wagin IV | Assistant Teacher (on leave) | 1912 |
| Sinclair, Jeanette | Wagin IV | Assistant Teacher | 1910 |
| Sinclair, Jeanie | Wagin IV | Senior Monitor | 1907 |
| Sinclair, Jennifer | Goomalling Primary School II | Mistress (Teacher) on Probation | 1963 |
| Sinclair, Jennifer | Goomalling Primary School II | Mistress (Teacher) on Probation | 1964 |
| Sinclair, Jennifer | Goomalling Primary School | Mistress (Teacher) | 1965 |
| Sinclair, Jennifer | Bunbury South Primary School | Mistress (Teacher) | 1966 |
| Sinclair, Jennifer | Perth East Primary School | Temporary Mistress (Teacher) | 1967 |
| Sinclair, Jennifer Mary | Carawatha Primary School | 1st Mistress (Teacher) | 1972 |
| Sinclair, Jennifer Mary | Lockridge Junior Primary School I | Deputy Headmaster | 1973 |
| Sinclair, Jennifer Mary | Beaconsfield Primary School IA | 1st Mistress (Teacher) | 1975 |
| Sinclair, Jennifer Mary | Beaconsfield Primary School IA | Principal Mistress | 1976 |
| Sinclair, Jennifer Mary | Beaconsfield Primary School | Principal Mistress | 1977 |
| Sinclair, Jennifer Mary | Beaconsfield Primary School | Principal Mistress | 1978 |
| Sinclair, Jennifer Mary | Oberthur Primary School | Deputy Principal F | 1979 |
| Sinclair, Jennifer Mary | Oberther Primary School | DPRIN F | 1980 |
| Sinclair, John | Belmont High School | Temporary Master (Teacher) on Probation | 1959 |
| Sinclair, John | Belmont High School | Temporary Master (Teacher) on Probation | 1960 |
| Sinclair, John | Belmont High School | Temporary Master (Teacher) | 1961 |
| Sinclair, John | Northam Senior High School II | Master (Teacher) | 1962 |
| Sinclair, John | Swanbourne High School | Master (Teacher) | 1963 |
| Sinclair, John | Cunderdin Agricultural Primary-Junior High School I | Master (Teacher) H. | 1964 |
| Sinclair, John | Cunderdin Junior Primary School | Master (Teacher) | 1965 |
| Sinclair, John | Armadale Senior High School | Master (Teacher) | 1966 |
| Sinclair, John | Armadale Senior High School | Master (Teacher) | 1967 |
| Sinclair, John | City Beach Senior High School | Senior Master (Teacher) PHYS. ED. | 1970 |
| Sinclair, John B. | Graylands Technical College | T Lect III Phys Ed | 1968 |
| Sinclair, John B. | Secondary Technical College | A Lect III Phys Ed | 1969 |
| Sinclair, John Bruce | MtLawley Teachers College | Lecturer B. | 1971 |
| Sinclair, John Bruce | Mt Lawley Teachers College | Lecturer B. | 1972 |
| Sinclair, John Bruce | Mt Lawley Teachers College | Lecturer B. | 1973 |
| Sinclair, Jones Brenda Carol | Kenwick Primary School | Mistress (Teacher) | 1978 |
| Sinclair, Julie Ann | Lynwood Senior High School | Mistress (Teacher) | 1979 |
| Sinclair, Julie Ann | Lynwood Senior High School | Mistress (Teacher) | 1980 |
| Sinclair, Keith Royden | East Narrogin Primary School | Master (Teacher) | 1971 |
| Sinclair, Keith Royden | East Narrogin Primary School | Master (Teacher) | 1972 |
| Sinclair, Keith Royden | East Narrogin Primary School I | Master (Teacher) | 1973 |
| Sinclair, Keith Royden | Willetton Primary School IA | Master (Teacher) | 1975 |
| SInclair, Lesley Anne | Eastern Goldfields Senior High School | Mistress (Teacher) | 1978 |
| Sinclair, Mande | Perth North I | Monitor | 1914 |
| Sinclair, Margaret | Mt Lawley Senior High School | Mistress (Teacher) | 1967 |
| Sinclair, Marlene | Midland Junction Senior High School | Temporary Mistress (Teacher) on Probation | 1959 |
