Our School

At Father Donald MacLellan Catholic Secondary School, it is our mission to be an inclusive Catholic learning community that inspires every student to achieve their full potential through faith and education. We recognize our call to love and serve from our Master teacher Jesus Christ, and we are committed to creating a Catholic learning community under the protection of Mother Mary.

The Catholic Graduate Expectations are our foundation as we strive for academic excellence and the acknowledgement of those who achieve it. We recognize God as the source of all life and actively work to focus on social issues within our local and global communities.

We celebrate the diversity within our community with a collaborative approach to learning, in cooperation with parents, the Catholic faith community, and other organizations that recognize the value of our mission. Within the context of Catholic teaching and Sacramental living, our school community strives to demonstrate respect and reverence for all life, thus nurturing a safe, Christian environment for the entire school community.

School Year Calendar
Our Board's School Year Calendar is now available. Please subscribe to our school calendar web page to receive the latest updates and emails on upcoming events and activities happening at school. 
About Us 

We offer a wide range of programs and services to students in the Durham Region who, for various reasons, may experience challenges achieving success in a traditional school setting. 

Through smaller class sizes, opportunities for independent study, co-op placements, dual credits, as well as options for both part and full-time programs, we are able to tailor programs to meet the individual learning needs of our students. 

The following is a list of programs offered through our school and their locations. All of these programs can all lead to an Ontario Secondary School Diploma (OSSD):

Father Donald MacLellan 

Father Donald MacLellan Catholic Secondary School was named in honour of the late Reverend Donald MacLellan, who served as Chaplain of Monsignor John Pereyma Catholic Secondary School from 1992 until his retirement in 2002. 

During his time as Chaplain, Father Don was passionate about working with students who faced challenges, adversity and daily struggles and worked with them to find their inner strength. 

His favourite saying was, "Be Not Afraid is written 365 times in the Bible - once for every day of the year."  

His belief in the value of Catholic education and developing the whole person was evident during his time as Chaplain, a period he often described as the best 10 years of his life.  

Father Don died on June 15, 2008. Our school serves as a tribute to him, his dedication to his students and lifelong learning. 


As Catholic educators, we live according to our Father's code and to lead our students, by example, to live the basic truths of the gospel message. This is an awesome, yet inspiring challenge which we share with the parents of our young men and women.

Children learn what they live. Each day we have the opportunity to teach our students:

  • to love by the way we love;
  • to be generous by our generosity;
  • to be passionate by our compassion; and
  • to be forgiving by the way we forgive.

However, a person cannot give what he or she does not have. Unless we are living the Gospel message, we cannot lead our students to do so.

There are many hallmarks of a Catholic educator, including:

  • Prayer - The challenges of our vocation, and indeed life in general, are great. To meet them we need to follow Christ's advice that we "ask the father in My name". Each Catholic educator has a duty to expose students to his or her particular style of prayer in order to assist students to recognize the value of prayer in daily life.
  • Eucharist - Parish, school, and staff liturgies provide opportunities to celebrate our faith. Our example can testify to the Eucharist as a joyful source of strength and community building.
  • Social Justice - This is the heart of the Christian message, that we "love one another as I have loved you". As our brother's and sister's keepers, we must be concerned about the aged, the poor, the oppressed, and any other marginalized group - both at home and abroad.

Below are links to resources to help you achieve success while at Father Donald MacLellan Catholic Secondary School.

Contact Us 

We welcome your questions, comments and concerns.

Principal: Chris Cuddy

458 Fairall Street, Unit 7
Ajax, ON L1S 1R6

Phone: (905) 666-1146
Fax: (905) 683-9436