Holy Trinity Secondary School

Our School

Through the cooperative efforts of the great staff here at Holy Trinity, we are excited to be able to offer our students a comprehensive academic curriculum as well as an outstanding co-curricular program. This year our enrollment is over 1400 pupils and our staff of approximately 100 teachers are instrumental in providing our students with the Catholic learning experience that will prepare them for their post-secondary goals.

At Holy Trinity, we respect the diversity of cultures within our community and build on this strength to prepare our students for the wider world once they leave our halls.

For more information, please see our website at: http://schools.hcdsb.org/hlyt/. ​

Student Success Programs

The staff at Holy Trinity CSS is dedicated to ensuring the success of all of our students.  In addition to our Student Success teacher (a

full time teacher responsible for the success of students at all grade levels,  especially grades 9 and 10), we offer the following programs:
  • Credit recovery and credit rescue options for all students
  • After school literacy and numeracy preparation classes run by our teachers
  • After school extra help, especially in Mathematics and English
  • Pathways presentations and the use of "My Blueprint" pathway selection software to chart the course of students future endeavors
  • Extensive co-op options for students wishing to experience the world of work.
  • Student success tracking from grade 8 through to high school with emphasis on teacher and parent involvement, visits with grade 8 teachers and an extensive grade 8 orientation plan for incoming students.


Program Highlights

  • Specialist High Skills Major in Arts
  • Specialist High Skills Major in Business
  • Phys. Ed focus courses in Football, Hockey, Basketball and Soccer
  • Dedication by all staff to excellence and high standards of achievement for all students in an atmosphere of equity, dignity and mutual respect​


There is a wide number of Co-curricular opportunites for students at HT, including:

Academic Decathilon

Art Club

Arts Festival

Athletic Council  


Business Club  

Chess Club   

Computer Club

Moderns Club
Library Club
Peer Helpers
Photography Club
Robotics (Tronic Titans - Team 3161)
School Play
Social Awareness
Student Council
Talent Show

Before and After School Programs

For more information about our full slate of Athletics programs, please see our website at:

Curriculum Focus

Holy Trinity offers a full curriculum of ministry courses infused with the Catholic faith and liturgical traditions. The community of Holy Trinity demands the best from its students and in turn provides them with an exemplary group of educators who strive to bring out the best in each and every individual student. The faith based curriculum is delivered by a staff with a common purpose, mutual respect and willingness to provide students with the learning needed to fulfill their dreams and reach their goals.​

Environmental Focus

Parent Community Involvement

​Our School Council consists of a very dedicated group of parents working with the school administration to support student development and well being at Holy Trinity.  Parents are always welcome to come and join our discussions!

Community Use of the School

The indoor and outdoor facilities of Holy Trinity CSS are in high demand by the community at large.
Our artificial turf field is used by many outside groups.  The interior of the building is home to many of the dramatic arts and dance clubs in the region. Holy Trinity boasts an excellent, well-equipped theatre seating 350.
Classrooms and cafeteria space areoften used by community groups to host various conferences and community events as needed. 

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Holy Trinity Secondary School

Holy Trinity Secondary School

Location map2420 Sixth Line
Oakville, Ontario, L6H 5Z8
Phone: 905-257-3534 Fax:905-257-6262
School Website | Class Portal
Find My School


St.Anthony Oakville, Mary Mother of God Oakville and St.Michael Oakville


Justine O'Grady

Vice Principal

Chris Chliszczyk

Vice Principal

Karen Boelhouwer


Toni Pinelli

Bell Times

8:30 am
8:35 am
2:40 pm
2:55 pm
8:30 am
8:35 am
2:40 pm



School Council Members


  • Margie Grier
  • Erin Bell 

Director of Education

Paula Dawson


​Anthony Danko
Helena Karabela
Paul Marai
Anthony Quinn​​


​Approximately 1,285 students 

Secondary School

Our Vision

The Halton Catholic District School Board is a model learning community, widely recognized as distinctively Catholic, providing exceptional education, while nurturing the call to love and to serve as a people of faith, living out God's plan.

Our Mission

​The Halton Catholic District School Board, in partnership with home and Church, is dedicated to providing excellence in Catholic education by developing Christ-centred individuals enabled to transform society.

Our Governing Values

At the Halton Catholic District School Board, we value:

Our Catholic Faith
and aspire to be models of Christ through our actions of love, forgiveness, compassion, and acceptance.

The Whole Child
and create conditions that support the spiritual, intellectual, physical and emotional well-being of all students so that they may fulfill their God-given potential.

Excellence in Learning
and provide opportunities that meet the needs and aspirations of all learners in a supportive, creative and innovative learning environment.

Relationships and Partnerships
and recognize that our success is reflective of the healthy and vibrant partnership of staff, parents, pastors, and members of our broader community.

The Importance of Contributing to Our Communities
and respect diversity, celebrate multiculturalism, honour individual rights, and embrace the social values of collective responsibility and the common good.