Southern Illinois University has had its share of turbulence at the top, most recently with the ouster of Fernando M. Treviño, chancellor of the institution’s flagship campus in Carbondale. Now the university has made the rare move of turning to a trustee to fill in as interim chancellor.

Samuel Goldman, a former professor and administrator at Carbondale, was appointed to the post on Friday after resigning from the university’s Board of Trustees.

With arbitration proceedings pending, Mr. Treviño has been assigned to a tenured faculty position. He was placed on administrative leave last month for “failing to perform basic job requirements outlined in his employment contract,” according to university officials. —Paul Fain