[6] The school outgrew the main building's original capacity of 1,000 students and an annex was built to accommodate the increase in enrollment.

The technology department at Holy Trinity consists of Communication, Construction, Cosmetology, Design/Drafting, Manufacturing, Culinary Arts and Transportation.

Some of the technology includes: The secondary school is represented in many different intramural sports as the Holy Trinity Titans.

Titan teams include swimming, soccer, rugby, track and field, badminton, tug-o-war, golf, basketball, hockey, tennis, cheerleading, volleyball, cross-country, football, figure skating and rowing.

[12][citation needed] In 2018 the boys hockey team won the A/AA OFSAA championship held in Collingwood.