It is the first of its architectural design by Edward J. Cuhaci in Ottawa, opened in 1990.
The school was initially constructed to relieve overcrowding at St. Paul's located a few kilometers to the east.
Because of a construction strike, the school was not ready to open on time, and students had to share the building at St. Paul's for the first two months.
Students from Holy Trinity attended classes in the morning, starting an hour earlier than usual and going until noon.
By the beginning of November 1990, all work on the new school was complete, and students moved into their new location.