Moose Jaw College was initially established (by the Presbyterian Synod of Saskatchewan) as a residential college for young men. The cost of the buildings was raised by public subscription and the site officially opened in September 1913, on a 45-acre site near River Park, in Moose Jaw, Saskatchewan. From 1925 until the early 1930s (when it closed), the principal was Rev. Angus A. Graham.

The residential school was preceded by a small day school, opened by J.C. Richardson in 1884 on the Little Black Bear Reserve and closed soon afterwards. In 1886, R. Toms reopened the day school and it operated until 1889, when the Woman's Missionary Society with the support of the Foreign Mission Committee of The Presbyterian Church in Canada and the Department of Indian Affairs built a new school just outside of the reserve’s boundaries. This was operated by The Presbyterian Church until 1924 when its operation was transferred to the United Church of Canada who managed it until its closure in 1949.

The Dominion Commission (officially "The Commission appointed pursuant to The United Church Act, chapter 100 of the Statutes of Canada, 1924") was formed to enable the distribution of property between the United Church of Canada, which about 70% of Presbyterian Churches in Canada joined, and the remaining "non-concurring" Presbyterian Church.

The Joint Committee officially convened in April 1904, in Toronto, bringing together appointed representatives from the Congregationalist, Methodist and Presbyterian Churches, to negotiate church union. Meetings continued through to 1908, when the terms written in the Basis of Union were agreed upon and sent to the negotiating churches, for discussion and approval. By 1912, both the Congregationalists and the Methodists had agreed to the terms. The decision was more contentious for the Presbyterian Church, though in 1916, their General Assembly decided to go ahead with the union.
Between 1916 and 1925, the Joint Committee worked to complete the union and defeat those opposing it, including the newly formed Presbyterian Church Association.

The Provincial Church Union Committee was formed on July 26, 1923, by representatives of the Saskatchewan Methodist Conference and the Presbyterian Synod of Saskatchewan to take preliminary steps to effect Church Union in Saskatchewan. Representatives of the congregational Churches were also invited to be on the committee.