In the early ’50’s a Catholic High School called Sacred Heart was operated by the Sisters of Providence. The school was located in King Township and serviced pupils from the northern part of York Region.
The York Separate School Board opened the doors of Sacred Heart Junior High School in September 1979, providing 265 students with a Grades 7 to 9 program. Through the cooperative efforts of the Board and the Toronto Archdiocese High School Commission, Grade 11 was introduced in September 1981 and one grade was added each subsequent year. Simultaneously, a building program was undertaken and beautiful new facilities were made available to students in September 1983.
The student population continued to increase and a new addition to the building was opened in May 1987. In 2002 two new additions were added which gave the school a new cafeteria, upgraded physical education equipment and facilities, an expanded library resource centre, a theatre/lecture hall, new administrative offices as well as guidance and special education additions.
Another major renovation took place in the summer of 2004. The entire second floor of the western wing received new Science Labs and Art Rooms.