Archbishop O’ Sullivan Catholic School Home
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We strive to provide a distinctively Catholic education that allows each child the opportunities and experiences 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.
School News
School Board News
ALCDSB Celebrates Catholic Education!
Catholic Education Week: May 3-8, 2026
ALCDSB Marks Mental Health Week with Focus on Connection
Mental Health Week: May 4 – 10, 2026
Welcome to Incoming Student Trustees
Congratulations Darren, Josephine, and Tess!
Director's Update - March
Read highlights and updates from Carey Smith-Dewey, Director of Education.
Student Census Survey
Grade 4-12 students are invited to complete the See Me in ALCDSB Student Census from April 13th to May 1st in their school.
A Call to Serve- Catholic School Trustees
Information about Catholic School Trustees & Catholic Ratepayers
2026-2027 School Year Calendar Approved by Ministry
The Ministry of Education has approved the ALCDSB School Year Calendar for 2026-2027.
Calendar
