| . | Year | . |
| 1874 |
|
The
High School for Girls founded. A Lady Principal
and four teachers, all trained at the McGill Normal School,
are appointed. |
| 1892 |
|
|
| 1965 |
|
The High School of Montreal becomes
co-educational, absorbs
The High School for Girls.
Last Lady Principal of The High School for Girls, Dr. Dorothy J. Ross, retires. |
| . | . | Principals
of the High School for Girls![]() |
| . | . |
|
| 1998 | 155 | School boards divide along language rather than religious lines: building at 3449 University Street transferred to French school board. |
| 2001 | 158 | Dr. Dorothy J. Ross, last Lady Principal, dies in Hudson, Quebec. |