Our School

At St. John XXIII Catholic 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. We encourage parents and guardians to stay informed of upcoming events, we ask that you please subscribe to our school calendar webpage to receive the latest updates and emails on activities happening at school. 
Child Care Services 
We are pleased to partner with the YMCA to provide before and after school care at St. John XXIII Catholic School. Call our child care partner at 905-904-0537 to learn more about our services. 
School Hours 

Our school hours are as follows:

9:05 a.m. - Entrance Bell
11:50 - 12:50 p.m. - Lunch
3:35 p.m. - Dismissal

St. John XXIII Catholic School was officially opened and blessed on June 16, 1968, by Monsignor Paul Dwyer, and classes began in September of that year.

Situated in the east Oshawa MacKenzie Park neighbourhood, the school was named for Pope John XXIII, who convened the Second Vatican Council (1962-1965). The original enrolment of 147 students spanned from Kindergarten to Grade 6, in eight classrooms with a total teaching staff of seven.

St. John XXIII is affiliated with St. Gregory Parish, and has long been proud of its positive involvement in the Catholic community throughout its history.

The school received a much-needed addition and renovation, completed in the 1990-1991 school year, allowing the school to accommodate Junior Kindergarten to Grade 8 classes. The renovation included more classrooms, a full gymnasium, library and amphitheatre. During this time, the school's enrolment surpassed 450, and portable classrooms were added to meet the school's needs. A staff of over 30 served at the school. 
  • Year Built: 1968 Addition in 1991 
  • Num. of Classrooms: 15
  • Rated Capacity: 311 
  • Child Care: Yes 
  • Community Facilities
  • Parish: St. Gregory Catholic Church 
School's Colours 
Our school colours are red and white. 
Patron Saint 
Our patron saint is Blessed Pope John XXIII was head of the Catholic Church from 1958 until his death in 1963.

Angelo Roncalli was the fourth child of thirteen. He was born to sharecroppers in 1881 in an Italian village. He was ordained a priest in 1904 and served in various posts, including appointment as Papal Nuncio in a number of countries. During the Second World War, he did much to help Jews, who were being persecuted. Pope Pius XII made Roncalli a Cardinal in 1953. Pope John was elected on October 28, 1958, at the age of 77. Despite the fact that many expected him to be a "caretaker Pope," he called the historic Second Vatican Council (1962-1965) to "open the windows" of the Church to the world. Pope John XXIII died in 1963, but the Council continued and resulted in many important Church teachings. Pope John was loved by many for his warmth and kindness. He was beatified on September 3, 2000. 
School Prayer 
God our Father,
Watch over us at St. John XXIII Catholic School.
Help us to use our special gifts to grow in knowledge
And make our school a place where peace, love, caring and friendship
Can be seen and felt in all our words and actions
So that we can be faithful followers of Jesus and examples to others.

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.
Student Agenda
Read our student agenda for information on school procedures, dress codes, and more.

Below are links to resources to help you achieve success while at St. John XXIII Catholic School.

Contact Us

We welcome your questions, comments and concerns.

Principal: Kate Remiz
195 Athabasca Street,
Oshawa, ON L1H 7J2
Tel: 905-723-1991
Fax: 905-723-5071