| Membership Years | School |
| 1907-1950, 1957-present | |
| 1907-1908 | |
| 1907-1928 | |
| 1907-1928 | |
| 1907-1928 | |
| 1907-1919, 1921-1928 | |
| 1907-1942 | |
| 1913-1928 | |
| 1918-1939 | |
| 1919-1928 | |
| 1925-1956 | |
| 1928-1948, 1977-present | |
| 1932-1934 | |
| 1935-1996 | |
| 1935-1942 | |
| 1937-1974 | |
| | Membership Years | School |
| 1945-present | |
| 1948-present | |
| 1949-1956 | |
| 1951-1959 | |
| 1957-1969 | |
| 1957-1974 | |
| 1963-1974 | |
| 1968-1973 | |
| 1970-1983 | |
| 1972-1985 | |
| 1975-present | |
| 1977-present | |
| 1981-present | |
| 1990-present | |
| 1991-present | |
| 1994-present | |
|