| 1921 | MacKillop College Port Macquarie | Port Macquarie | Information Processes and Technology | 4 |
| 1922 | Macquarie Fields High School | Macquarie Fields | Economics | 4 |
| 1923 | Macquarie Fields High School | Macquarie Fields | English Extension 1 | 4 |
| 1924 | Maitland Grossmann High School | East Maitland | Ancient History | 4 |
| 1925 | Maitland Grossmann High School | East Maitland | Design and Technology | 4 |
| 1926 | Maitland Grossmann High School | East Maitland | General Mathematics | 4 |
| 1927 | Maitland Grossmann High School | East Maitland | Mathematics | 4 |
| 1928 | Marcellin College | Randwick | Business Studies | 4 |
| 1929 | Marcellin College | Randwick | Chemistry | 4 |
| 1930 | Marcellin College | Randwick | English (Advanced) | 4 |
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| 1931 | Marcellin College | Randwick | Physics | 4 |
| 1932 | Marian Catholic College | ? | Personal Development, Health and Physical Education | 4 |
| 1933 | Marist College Eastwood | Eastwood | Physics | 4 |
| 1934 | Marist College Kogarah | Bexley | Legal Studies | 4 |
| 1935 | Marist College Kogarah | Bexley | Senior Science | 4 |
| 1936 | Marist College North Shore | North Sydney | English Extension 1 | 4 |
| 1937 | Marist College North Shore | North Sydney | Mathematics Extension 1 | 4 |
| 1938 | Marist College North Shore | North Sydney | Studies of Religion II | 4 |
| 1939 | Marist Sisters College Woolwich | Woolwich | Biology | 4 |
| 1940 | Marist Sisters College Woolwich | Woolwich | Personal Development, Health and Physical Education | 4 |
| 1941 | Marist Sisters College Woolwich | Woolwich | Visual Arts | 4 |
| 1942 | Marsden High School | Meadowbank | Mathematics Extension 1 | 4 |
| 1943 | Mary MacKillop College | Wakeley | History Extension | 4 |
| 1944 | Mary MacKillop College | Wakeley | Mathematics | 4 |
| 1945 | Masada College | St Ives | Software Design and Development | 4 |
| 1946 | McCarthy Catholic College Emu Plains | Emu Plains | Personal Development, Health and Physical Education | 4 |
| 1947 | McCarthy Catholic College Emu Plains | Emu Plains | Studies of Religion I | 4 |
| 1948 | Menai High School | Menai | Modern History | 4 |
| 1949 | Merewether High School | Broadmeadow | Music 2 | 4 |
| 1950 | Merewether High School | Broadmeadow | Textiles and Design | 4 |
| 1951 | Meriden School | Strathfield | Drama | 4 |
| 1952 | Meriden School | Strathfield | English Extension 2 | 4 |
| 1953 | Meridian College Pty Ltd | Surry Hills | Mathematics Extension 1 | 4 |
| 1954 | MLC School | Burwood | Design and Technology | 4 |
| 1955 | MLC School | Burwood | General Mathematics | 4 |
| 1956 | MLC School | Burwood | Geography | 4 |
| 1957 | MLC School | Burwood | Mathematics Extension 2 | 4 |
| 1958 | Monaro High School | Cooma North | English Extension 2 | 4 |
| 1959 | Monaro High School | Cooma North | General Mathematics | 4 |
| 1960 | Monte Sant Angelo Mercy College | North Sydney | Studies of Religion II | 4 |
| 1961 | Moriah College | Queens Park | Music 2 | 4 |
| 1962 | Moriah College | Queens Park | Studies of Religion II | 4 |
| 1963 | Mosman High School | Mosman | Ancient History | 4 |
| 1964 | Mosman High School | Mosman | Mathematics Extension 1 | 4 |
| 1965 | Mosman High School | Mosman | Senior Science | 4 |
| 1966 | Mount Carmel Catholic High School | Varroville | Personal Development, Health and Physical Education | 4 |
| 1967 | Mount St Benedict College | Pennant Hills | Drama | 4 |
| 1968 | Mount St Benedict College | Pennant Hills | Food Technology | 4 |
| 1969 | Mount St Benedict College | Pennant Hills | General Mathematics | 4 |
| 1970 | Mount St Joseph Milperra | Milperra | History Extension | 4 |
Source: NSW Education Standards Authority (NESA).
Supplementary data from school publications.
Supplementary data from school publications.
Last Updated: 22 Feb 2021