Because of the 2010 Canterbury earthquake ( 7.1 magnitude ) which devastated much of the city , the college accommodated the entire primary school community of St Paul 's School , Dallington for several months . But the February 2011 Christchurch earthquake ( 6.3 magnitude ) caused far worse devastation to the city than the September 2010 earthquake . Parts of the college were under the unstable 400-ton dome of the Catholic Cathedral . Because the dome was in imminent danger of collapse , the college left the site and operated in the afternoons at St Thomas of Canterbury College . St Paul 's School moved to a site which the Minister of Education made available . The dome was removed on 26 July and the school moved back to its own site on 1 August 2011 . However three buildings remained off limits . Because of the effects of the earthquakes , Marian College , Christchurch was relocated to Catholic Cathedral College ( which had enough surplus capacity to accommodate both schools in ordinary time ) at the beginning of the 2012 school year for a period expected to be between two and four years
2010 Canterbury earthquake
2010 Canterbury earthquake
Catholic Cathedral College