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.
News & Announcements
June is National Indigenous History Month
June 1-30, 2026
Novena to the Sacred Heart of Jesus
June 3 - 12, 2026
Celebrating PRIDE Across ALCDSB
June 1-30, 2026
National AccessAbility Week
May 31 - June 6, 2026
The Spring 50/50 Raffle is now LIVE!
Last year, the three raffles raised approximately $60,000 for the Algonquin & Lakeshore Catholic Education Foundation.
Become a Homestay Family!
The ALCDSB is seeking Homestay families for the 2026 – 2027 school year.
The ALCDSB seeks two volunteer community members to serve on its Audit Committee
The Algonquin and Lakeshore Catholic District School Board (the Board) is seeking two community members with financial expertise and business knowledge to serve on its Audit Committee for a three-year term commencing September 1, 2026.
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