NOTES:
- After the end of the 1950-51 season Clarkson defeated Middlebury in a playoff game to determine the league champion.
- For 1951-52 St. Lawrence was declared the sole champion when RPI was found to have used an ineligible player.
| SEASON | CHAMPION(S) |
|---|---|
| 1950-51 | Clarkson |
| 1951-52 | St. Lawrence |
| 1952-53 | RPI |
| 1953-54 | RPI & St. Lawrence |
| 1954-55 | St. Lawrence |
| 1955-56 | Clarkson |
| 1956-57 | RPI |
| 1957-58 | Clarkson |
| 1958-59 | St. Lawrence |
| 1959-60 | St. Lawrence |
| 1960-61 | St. Lawrence |
| 1961-62 | Clarkson |
| 1962-63 | St. Lawrence |
| 1963-64 | Clarkson & St. Lawrence |
| 1964-65 | Clarkson |
| 1965-66 | Clarkson |
| 1966-67 | St. Lawrence |
| 1967-68 | Clarkson |
| 1968-69 | RPI |
| 1969-70 | Clarkson |
| 1970-71 | Clarkson |
| 1971-72 | RPI |