Latest News & Events
25th March 2026
Post 16 at St Mary’s CBGS
We’re welcoming applications from ambitious, highly-motivated students ready to excel in a vibrant, academically driven community. With a broad and[…]
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26th February 2026
Career Opportunities at St Mary’s CBGS
Teacher of English to A Level (Permanent) Closing date: On or before 12 noon Monday 9th March 2026 Interviews: W/B 23rd March[…]
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15th February 2026
Pupil Support Programme Launch
We’re happy to share that our Pupil Support Programme will kick off after the half-term break on Monday 16th February![…]
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Careers news
26th September 2025
St Mary’s University College Open Day
Some of our Year 14 students who may be interested in making an application to St Mary’s University College attended[…]
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26th September 2025
Year 14 University Talks – September 2025
In September, we have welcomed representatives from several universities to school to speak to our Year 14 students. At this[…]
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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.
