According to the Ariel view in Bing Maps Mapleford Gate doesn't extend to the west.  A street leaves Courney St further south and travels to the south side of the school building.  Said street is Mapleford BLVD not Gate.  That said, the existing drawing of roads is consistent with the City of Regina taxation map.  https://opengis.regina.ca/TaxWeb/viewer.html  The inconsistency merits investigation.