Archbishop O'Sullivan Catholic School, located in the City of Kingston, was officially opened in 1979. The school serves a diverse population of 250 students from Kindergarten to Grade 8 who are supported daily by a team of dedicated and caring staff members.

​The school facility shares space with numerous community partners.  The Y.M.C.A. offers a Before/After School Care Program.  Several community and church groups have use of our school for a variety of functions throughout the school year.

We strive to provide a distinctively Catholic education that provides each child with the opportunities and experiences necessary to grow in their academic capacity and faith formation. Within these experiences we focus on high expectations for all learners that are rooted in our Gospel teachings.  Archbishop O'Sullivan Catholic School has a strong relationship between the school and church community, primarily with St. Paul the Apostle Church.  Father Sebastian Amato and the school community are committed to working with our students, staff and families to realize the distinct nature of our Catholic school.  Students have many opportunities to live their faith as altar servers, readers during our monthly School Masses, as members of various student-led and initiated committees such as the "Free the Children".  Our students take an active role in preparing for and participating in the Sacramental life of St. Paul the Apostle Parish.

Archbishop O'Sullivan Catholic School's students, staff and families form a community of life-long learners who work together, in a respectful environment, to meet the spiritual, academic, physical and emotional well-being of all our students.  Archbishop O'Sullivan Catholic School is rooted in a long-standing tradition of academic excellence that is focused on the Gospels and the teachings of Jesus Christ. Our Algonquin and Lakeshore Catholic District School Board Spiritual theme of Faith in Action:  I by my works, will show you my faith is evident in our daily actions and conversations.  Our school demonstrates our stewardship of the earth as we are recognized as a Gold Eco School.  As members of a school community we actively participate in various fund-raising initiatives/projects which have both a local and global perspective.