St Macartan's Updates


Follow us on Twitter


SEM APP available for Free, download from App Store and Google Play

google play download itunes app store logo

Watch a video on how to install our school app
App Help

Sem TV

Welcome To St Macartan's College

raymcHughFocal ón bPríomhoide Raymond Mc Hugh

Céad fáilte chuig suíomh idirlíne Choláiste Mhic Chairthinn. This website is designed to give all members of the St. Macartan’s College community, past and present an insight into life at The Sem.

Situated in North Monaghan, on the edge of Monaghan town, St. Macartan’s College is a post-primary school for boys.d.…… read more>>

About US

stmacs-logoThe crest of St. Macartan’s College, as seen in the front hall of the school, was designed by the artist Richard J. King, for the centenary celebrations of 1940. It is modelled on the front panels of the circular boss at the Clogher Cross,the 14th-century treasure, now on loan from the Diocese of Clogher to the Monaghan County Museum. The panels contain the interlaced letters DEUS(God), and, underneath, the motto of the College, Fortis et Fidelis. There is also a sculptural installation based around the crest on the front lawn in front of the 1840 school building….more info

Contact Us & Location


St. Macartan’s College, Monaghan, Co. Monaghan, Éire

(047) 81642/83365 Fax: (047) 83341
School Hours: Monday to Friday 9.00A.M. to 4.00P.M.

Stay up to date

With all the latest St Macartan’s news and announcements, sign up for our newsletter.