In 1961, the English Catholic School Board offered bilingual classes for the first time at Holy Cross School in Georgetown. The first French kindergarten appeared in Georgetown in 1965, when members of the Francophone community (mostly comprised of mothers and led by Therese St. Jean), approached different Francophone families with plans to begin a kindergarten. They were not able to build or secure a school for the first year, so it was held in the basement of a local tavern and restaurant at the Delrex Plaza.

Convincing the school board of granting them their own school was not an easy task. After failed negotiations, a protest was held in May 1965. The Francophone group held a day-long sit-down strike at Holy Cross School which drew much attention from the community. The school strike was considered to be part of a larger movement across Canada in the 1960s that called for the civil liberties of oppressed minority groups to be recognized.

In 1969, Sacré-Cœur was granted school status by the Anglophone Catholic School Board. That same year, they also left the basement of the restaurant and returned to Holy Cross School, but this time with classes completely in French, not bilingual.

In 1988, the Francophone school once again moved out of Holy Cross School and into the newly vacant Wrigglesworth, which was formerly an English Council school. However, this was just a temporary lease and non-renewable. So, they once again had to come up with a new solution and find a place to move.

On September 8, 1994, they opened the doors to 130 students at their new school, built by a French architect. Today, the school continues to welcome Francophone students from kindergarten to grade 6.