Kristine Kerr was appointed circuit court judge in 2012 by Gov. Jeremiah W. "Jay" Nixon.
She received her B.A. in economics from Brown University in 1982 and her law degree from Boston University in 1985.
From 1986-1987, Judge Kerr clerked for the Hon. Kent Karohl in the Missouri Court of Appeals, Eastern District. She was engaged in private practice from 1987 to 1988, when she joined the Missouri State Public Defender system. She worked as an assistant public defender in the City of St. Louis, handling death penalty cases with the Capital Litigation Division. She became First Assistant Public Defender in St. Louis in 1993 and Assistant Public Defender in St. Louis County in 2003. In 2004, she was appointed Family Court Commissioner, and was unanimously reappointed to that position by the 21st Circuit Court en banc in 2008.
Judge Kerr is a member of the St. Louis County Bar Association, Women Lawyers' Association, Lawyers Association of St. Louis, and Bar Association of Metropolitan St. Louis. She was elected a judicial fellow in the Advanced Science and Technology Adjudication Resource Center in Washington, D.C., in 2009.