Rose Mack was elected to her second six-year term on the St. Charles Community College Board of Trustees in April 2016 after being appointed to a vacated seat in July 2009. Mack, who currently serves as Board Vice President, has also served as Board Treasurer (2018-20), Board Secretary (2010-2014) and Board President (2014-2016).

Mack is served 10 years as a councilwoman for Ward 2 in the City of O'Fallon. Previously, she served as president and chief executive officer of the O'Fallon Chamber of Commerce, holding the position from 1996 to 2003. After serving as the in-district representative for former Missouri State Senator Jon Dolan from 2003 to 2006, she returned to the Chamber from 2006 to 2010.

Additional civic involvement includes St. Charles County Municipal League Board of Directors, St. Charles County Ambulance District Advisory Board, First State Bank Advisory Board, SSM St. Joseph Hospital West Advisory Board, and founding member of Vision St. Charles County Leadership program. Honors include the Vision Leadership Visionary of the Year Award (2006) and the Progress 64 West Excellence in Community Development Award.

As a former community college student, Mack has a personal interest in serving on the Board of Trustees. "Community colleges serve students from the young to the young at heart," she said. "As tuition costs rise at most four-year institutions, St. Charles Community College continues to help our residents by providing a quality education at an affordable price. The college is a great value to our community and I want to help maintain the integrity and service that this college provides."

Mack lives in O'Fallon and has four children, nine grandchildren, and three great grandchildren.