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Mount Sion Secondary

At the forefront of excellence

Welcome to      Mount Sion C.B.S.

Edward Kennedy

"I am both delighted and proud to introduce Mount Sion C.B.S. Secondary School to you through our website and give you an insight into our vibrant and exciting school community.

Mount Sion C.B.S is the first Edmund Rice school in the world and has been educating boys at this historical site for over two hundred years. Edmund Rice was a very compassionate person and we pride ourselves in being a very understanding and caring school where the needs of all learners are catered for."Read More

School Notices

Welcome to our new look website. Our new site is 'responsive', making it easy to navigate on a wide range of web browsers and devices. There’s a range of smaller changes to improve your experience of the site.

A Letter from Chief Medical Officer, Tony Holohan, is available to read in our latest news section.

Click an icon to read more about Our Curriculum

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Remote Learning Update

Due to the closure of schools for the foreseeable future, here in Mount Sion CBS we hope you are keeping well and staying safe during these trying times.


Below we have attached an important letter to all parents outlining the schools plan for remote teaching and learning to begin Monday 11th January. It outlines the details for all students and the resources the school are making available throughout the rest of this lockdown.


Letter to Parents 8th January 2021

Minister for Education's Letter to Parents 12th January 2021

Guidelines for Google Classroom and Zoom


If a student needs access to a Google Classroom (Classroom Code) please email there subject teacher or email schoolemail@mountsioncbssecondary for assistance.


If you are having technical issues with your email or need assistance with any devices, please contact: schoolemail@mountsioncbssecondary.ie


Below is a very helpful guide for parents in relation to using Google Classroom

Guide to Google Classroom