- June 1982-1 May 2007
By the 1950's The Christian and Missionary Alliance (C&MA) had become increasingly concerned that potential Alliance missionaries and pastors who desired master's level formation had to look outside the Alliance to find it. To address the problem, the C&MA began The Jaffray School of Missions, a one-year post-baccalaureate missionary training program, which was housed on the campus of Nyack Missionary College, Nyack, N.Y., which was the movement's flagship undergraduate institution. However, this solution did not appeal to those who wanted a full master's degree. To address this concern the 1963 General Council voted to make Wheaton College Graduate School the official seminary of the C&MA until the Alliance could develop its own seminary. It took the Jaffray School of Missions until 1974 (when it changed its name to the Alliance School of Theology and Missions) to offer a two-year master's degree, and until 1979 (when it became Alliance Theological Seminary) to offer a full M.Div. degree.
Meanwhile, the faculty of Canadian Bible College (CBC) had become increasingly concerned about the dilution of the Alliance ethos and the loss of potential missionary and ministry candidates to other denominations. To address these concerns, Alvin Martin, president of CBC, along with academic dean Samuel Stoesz, began, in 1965, to lobby the C&MA's Education Department for permission to start a graduate school in Canada. The General Council of 1967 granted their request, and in September 1970 Canadian Theological College (CTC) began classes on the campus of Canadian Bible College. The new institution was called "College" and not "Seminary" in deference to those member of the Alliance constituency who equated seminary education with liberalism. Although continuing to share a president and board with CBC, CTC was granted a separate charter by the Saskatchewan Legislature in 1973. In the same year, CTC was approved for affiliation with the University of Regina. It offered six classes at the University in Hebrew, Greek and biblical literature, and the president of CBC/CTC served on the University Senate. Just over a decade later the school had become sufficiently established within the denomination to consider a name change, and in June 1982, by an act of the Saskatchewan Legislature, Canadian Theological College became Canadian Theological Seminary.
The seminary became a fully-accredited member of the Association of Theological Schools in 1989. That year it began a doctor of ministry program, which it offered until 1997. Along with Canadian Bible College, it moved to Calgary in the summer of 2003 and became a part of the joint venture known as Alliance University College/Nazarene University College. On 1 May 2007, when AUC/NUC became Ambrose University College, the seminary changed its name to Ambrose Seminary. .