McIvor was a member of the Ulster Unionist contingent who negotiated the Sunningdale Agreement in 1973. When the powersharing Executive was set up in the aftermath of Sunningdale McIvor headed the Education Department. McIvor left politics after the fall of the Executive in 1974 and sat as a resident magistrate
He was to the fore in pushing the need for shared schools for Protestant and Catholic pupils in Northern Ireland. In 1981 he became the first chairman of Lagan College, Northern Ireland's first integrated school and when Sinn Fein's Martin McGuinness became education minister he invited him to visit the college.
William BasilMcIvor (17 June 1928-5 November 2004) was an Ulster Unionist politician and pioneer of integrated education.
Born in the Tullyhommon, County Fermanagh part of the village of Pettigo, which straddles the Northern Ireland border, McIvor attended the Queen's University of Belfast and was called to the Bar in 1950.
McIvor left politics after the fall of the Executive in 1974 and sat as a resident magistrate.