Columbia University appointed a new acting president Friday. Claire Shipman, co-chair of the school's Board of Trustees, will assume the role effective immediately, according to an announcement on the school's website.

Interim president Katrina Armstrong returned to her post running the New York school's medical center after news the university acquiesced to sweeping demands from the White House.

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