[citation needed] Holy Trinity fosters a respectful and supportive Catholic environment that inspires all students to reach their full potential.

Holy Trinity offers students a comprehensive academic curriculum, an outstanding co-curricular program, and an important Catholic learning experience that will prepare them for their post-secondary goals.

No provision is made by the Ministry for important and needed specialty classrooms for these additional students enrolled beyond the official building capacity.

Many teams, including Curling, Cross Country, Track and Field, Swimming, and Ultimate Frisbee are open to all students in a co-ed capacity.

Holy Trinity's Student Council is elected in May of the preceding school year and consists of 3 to 4 representatives from each grade, a vice-president and a president.

Holy Trinity's Student Athletic Council (SAC) consists of hundreds of volunteers and an elected vice-president and president.

The Senior Boys won their first ever Halton AAAA Basketball Championship in the 2006 - 2007 season by beating the Assumption Crusaders.

Holy Trinity's lacrosse team has won four straight Halton championships, and competed in OFSAA in 2014–2017.

The STAR council has hosted an annual “Fringe Festival” which consist of student directed one act plays, this normally happens around Christmas time in the first semester.

In the Spring of 2017, the school put on a production of Tim Rice's “Jesus Christ Superstar” and starred seniors Olivia Ouzounis, Jacob Moro, and Luca D’Amico.

Past shows include: Fame (2004), Dracula (2005), Kids Say The Darndest Things (2006), Footloose (2007), The Donnellys (2008), The Wiz (2009) & Metamorphoses (2010).

Past Sears Drama shows include: No Exit (2008), Inspector Rex (2009) & the original Bollywood musical, Bombay the Hard Way (2010).

Students must pay fifteen dollars that covers, a bus to and from downtown oakville, and a pizza lunch.

Titan Shield stands for serving, helping, including, empowering, leading discerning and is a new leadership program at Holy Trinity of the 2018 year that was made to help the grade 8 students coming in the new school year to transition and make the move to high school more comfortable and an inclusive experience.