École secondaire du Sacré-Cœur is one of two French-language Catholic secondary schools in Greater Sudbury, Ontario. It is maintained by the Conseil scolaire de district catholique du Nouvel-Ontario. It is located at 261 Notre-Dame Avenue, next to city owned soccer fields and tennis courts which double as school grounds. The school is currently under the direction of Hélène Éthier and acting as the vice-principal is Yves Laliberte.
The student population is estimated to be over 400, and so exceeding its originally intended student capacity. The large number of students resulted in the temporary installation of 3 small portable classrooms behind the atrium. The portables are to remain until the completion of an expansion on the school, known as Plan B.
The grounds are also the location of Sudbury's first Franco-Ontarian monument, which encompasses the monument placed there nearly 100 years ago. The unveiling took place September 25, 2008.
Father Joseph Specht and Father Nolin were Jesuit priests behind the conception of the then Collège du Sacré Cœur de Sudbury. It was the first, and for a long time only, college in the Northern Ontario area. It first opened its doors in 1913 and was a school exclusively for the education of boys. In 1957 the College was renamed and became the University of Sudbury. Starting in 1967 the building served as one of Cambrian College's three campuses until 1977. It was later occupied by the Gymzone Family Fitness Centre which has relocated to the old Leon XIII school. Collège Boréal also employed the space from 1995 to 1997 while their new facilities were being constructed.
Following some renovations, École secondaire du Sacré-Cœur opened in 2003. Part of the original building's foundation is still intact and clearly visible in the school's entrance. During its first year, Sacré-Cœur's student population was mainly composed of the students from l'Héritage, a school which had to be shut down. The last students from l'Héritage graduated in 2007.
École secondaire du Sacré-Cœur is seen by many as being the more relaxed counterpart to Collège Notre-Dame (Sudbury), the other French Catholic high school in Sudbury. However, much like the other school, it too has a uniform code. Students have the choice of pants (dress or casual), capris, shorts, or kilts for girls with which they can wear various tops, ranging from rugby shirts, blouses, golf shirts, and sweatshirts among others. The golf shirts come in white, royal blue and powder blue.