It was decided to merge these schools into a larger Catholic secondary day school for girls which would be an integrated school under the Private Schools Conditional Integration Act 1975 and to develop it on the McKillop College site in North Parade.
Marian College was officially opened on 25 March 1982, the feast of the Annunciation of the Lord.[3] The first principal was Sister Eleanor Capper RSJ who left in 1996.[4] In the subsequent 30 years, Marian College extended its facilities to include an assembly hall/gymnasium, a music suite, library, technology rooms’ and new classrooms. The oldest building was the administration block, which was built in 1914 by a Doctor Louisson and used as a family residence, until it was sold to the Sisters of St Joseph in 1949.[3]
As a result of the February earthquake and the June 2011 Christchurch earthquake significant liquefaction occurred on the College site resulting in most buildings suffering differential settlement in many areas of up to 215mm. It was therefore decided to relocate the school to the site of Catholic Cathedral College (where there was sufficient surplus capacity to accommodate the school) at 122 Barbadoes Street at the beginning of the 2012 school year. Initially, the College was expected to be accommodated for a period of two to four years.[5] On 15 March 2019, Marian College announced the site for a new location on Lydia Street in Northcote.[6][7] The school opened on the new site on 9 February 2024.
Mary Declan Burke RSM, Mercy through the years : the centennial history of the Sisters of Mercy, Christchurch Diocese, 1878–1978, Sisters of Mercy Trust Board, Christchurch, 1978.
St. Mary's Schools Christchurch, 1894–1994: A history published for the centennial jubilee, September 1994, St Mary's School, Christchurch, 1994.
A Century in pictures : the Sisters of St Joseph of the Sacred Heart in New Zealand, 1883–1983, Catholic Publications Centre for the Sisters of St Joseph of the Sacred Heart, Auckland, 1983.
Anne Marie Power R.S.J., Sisters of St Joseph of the Sacred Heart : New Zealand story, 1883–1997, The Sisters, Auckland, 1997.
Diane Strevens, MacKillop Women: The Sisters of St Joseph of the Sacred Heart Aotearoa New Zealand 1883–2006, David Ling, Auckland, 2008.
Michael O'Meeghan S.M., Held firm by faith : a history of the Catholic Diocese of Christchurch, 1840–1987, Catholic Diocese of Christchurch, Christchurch, 1988.
Michael King, God's farthest outpost : a history of Catholics in New Zealand, Viking, Auckland 1997.
