According to a Prize Day speech delivered by the Principal in the Druids Hall on 10 December 1917 and reported in "The Colonist" the next day, The school was founded in 1906. However, this is in conflict with an article in the same newspaper that appeared on 21 August 1905 that indicates an opening date of 15 September 1905. Between 1909 and 1917 Cabragh House School was heavily promoted in local almanacs, street directories and the Post & Telegraph New Zealand Directory.