Sackville Street Public School
This school was designed in 1887 in a plain Victorian style by the eminent Toronto architect, W.G. Storm. It was the third school in the area, replacing the nearby Palace Street School, 1859, and the Enoch Turner School, 1848. Sackville's initial enrolment of 49 pupils increased to 269 by 1888. Mrs. Georgina Stanley Riches was first Head Mistress and served until 1912 when she ended a 37 year teaching career. She was formerly principal of Palace Street School. This building, Toronto's oldest school having continuous use, has substantially retained its original architectural character.
Plaque via Alan L. Brown's site Toronto Plaques. Full page here.