Initially, the Board continued to transport students to Catholic high schools in Metropolitan Toronto.

In 1973, the Metro Separate School Board declared that these students could no longer be accommodated.

The Board, therefore, opened the doors of Sacred Heart Junior High School in September 1979, providing 265 students with a Grades 7 to 9 program.

Simultaneously, a building program was undertaken and updated new facilities were made available to students in September 1983.

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.