Columba College (Irish: Coláiste Choilm) is an integrated presbyterian school in Roslyn, Dunedin, New Zealand. The roll is made up of pupils of all ages. The majority of pupils are in the girls secondary, day and boarding school, but there is also a primary school consisting of boys and girls in years 1-6. The school uniform is formal and compulsory for all pupils, currently consisting of; a green blazer, white shirt, navy blue jersey, with Black Watch tartan necktie and kilt. Columba has four school houses, Braemar (Green), Girton (Red), Iona (Blue) and Solway (Yellow) named for the founding schools and Saint Columba. Based on NCEA results, Columba College is one of the highest achieving schools in New Zealand. Its motto is "Gratia et Disciplina Bona" meaning Grace and Good Discipline. It is one of the few schools in Dunedin to teach Mandarin, and has recently built an award-winning gymnasium on the school grounds. Three mornings during the week, the school congregates in Constance Hall (that has been recently renovated) for Assembly. It is during this time that congratulations and awards are handed out, as well as general notices.