Among the new changes, Columbia agreed to review its admissions policies, ban protesters from wearing masks, bar demonstrations from academic buildings and to put its Middle East studies department under the supervision of a new senior provost with a mandate to review its leadership and curriculum.

Board of Trustees Co-Chair Claire Shipman was appointed acting president with immediate effect, while the board searches for a new president.

Katrina Armstrong is leaving the post a week after the university agreed to a list of demands from the White House.