Latest News & Events
30th April 2025
Year 12 Forester’s Hurling Panel Undefeated
Unfortunately, this year’s Ulster Schools’ Forrester’s Cup competition was deemed null and void. There were two factors that led to[…]
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30th April 2025
Year 12 Forester’s Hurling Panel Undefeated
Unfortunately, this year’s Ulster Schools’ Forrester’s Cup competition was deemed null and void. There were two factors that led to[…]
Read More

6th May 2025
2025 Leavers Video
Click on the image below to watch the 2025 Leavers video presentation.
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3rd March 2025
NICCY Visit
Mr Chris Quinn (NI Commissioner for Children and Young People) visited our School this morning. He gave a very inspirational[…]
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Careers news

30th June 2022
Careers Exploration Week 2022
We held the first ever St Mary’s Careers Exploration Week for Years 8 to 11 pupils from 21st to 27th[…]
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24th March 2022
Easter Creative Technology Camps
Tech Connects – FREE Digital Arts Camps – Easter 2022 Tech Connects, a two year Belfast based project aimed at providing[…]
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9th February 2022
Bring I.T. On – Virtual Careers Fair
Bring I.T. On are holding a virtual careers fair on Thursday 17th February between 2:30pm and 4:30pm. This should be[…]
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8th February 2022
Apprenticeship Week 2022
It’s Apprenticeship Week! All this week, employers, FE colleges, private training employers and universities are offering a range of virtual[…]
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Principal's Welcome
On behalf of our entire school community, I am delighted to welcome you to our school website. I hope you enjoy reading about the exciting opportunities we provide for our pupils. At St. Mary’s, we pride ourselves on our pastoral care, the holistic development of our pupils and the pursuit of academic excellence.
St. Mary’s CBGS is an all-boys voluntary grammar school located on the Glen Road in West Belfast. The school was founded by the Christian Brothers in 1866 and moved to our current site in 1968. The school is inspired by the vision of Edmund Rice, who sought to create schools that provide excellent education and cultivate Gospel-based values. St. Mary’s continues this work today with over 1,180 students aged 11-19.
The ethos of our school is underpinned by our core values of trust, respect and equality. Our teachers recognise the uniqueness of every student, encourage firm friendships among the boys and foster a sense of community. It is within this caring and supportive environment that our students are able to develop their unique talents, becoming enthusiastic and highly motivated learners.
