Ms. McIlvaine Smith served as a member of the state House of Representatives from 2007 through 2010. Among her committee assignments, she was the majority chairwoman of the Special Education Subcommittee. Previously, she had been a member of the West Chester Borough Council, serving as vice president. She is a lifelong resident of Chester County, graduating from West Chester Henderson High School and from West Chester University of Pennsylvania, summa cum laude, with a degree in elementary education. She taught fourth grade at Penn Wood Elementary and environmental education at the Brandywine Valley Association. From 1980 to 2007, she and her late husband, Robert, owned and operated their family business, Brandywine Water Systems, Inc. She is an enrolled tribal member, by birth, of the federally recognized Sac and Fox Nation of Oklahoma.