Club Mhuire is the Irish Language Society in St. Mary's Grammar School, Magherafelt. Organised by 6th form pupils, it provides opportunities for students to interact, and partake in activities, through the medium of Irish. They meet every Thursday, and activities include quizzes, bingo, and teaching students how to make St Brigid's Crosses (Crosóg Bríghde). Student who excel in the various activities get to win prizes which are always linked to the Irish Language, such as Gael Linn or Foras na Gaeilge merchandise.
It was founded in 2006 by the current committee with the help of Dr. O'Neill and Miss Harte, two of the school's Irish teachers. The club returned in 2007 and 2008 but didn't return in Spring Term.
Committee: The 6th Form committee in charge is as follows: Chairperson - Ailéana Nic Siacais Secretary - Leanne Mc williams Treasurer - Celeine O'Hagan PRO - Aimee Mc Guckin Committee Members - Eanna Gilmore, Rachel Doherty,Cillian Darragh. To be updated