Clark Switzer devoted his career to the study and teaching of history. From 1976 to 2021, he taught U.S. history at Wyoming Seminary, where he brought energy and innovation to the classroom by engaging students with the people, places, and pivotal moments of local and American history. His “living history” curriculum incorporated local history and current events, using artifacts, clothing, music, games, debates, role-playing simulations, living historian speakers, and field trips to deepen students' understanding of the past. He also served as Chair of the Social Studies Department for the primary and middle school divisions.

In northeastern Pennsylvania, Clark is an active speaker, collaborator, and volunteer. He has presented programs on local history for libraries, church groups, and community organizations, and has been a speaker at two Luzerne County Community College Local History Conferences. In partnership with Wilkes University faculty, he helped develop Project History, a curriculum designed to support area teachers in teaching local history. He volunteered as a tour guide for the Knox Mine for nine years and has served on numerous boards, including the Luzerne County Historical Society, the Anthracite Heritage Foundation, and the Greater Pittston Historical Society. He currently serves on the board of the Irem Temple Restoration Project.

Clark holds a B.A. in Sociology from King's College and an M.S. in Guidance Counseling from the University of Scranton. He is also the author of Scratching the Surface, an online textbook focused on Wyoming Valley history, accompanied by an optional video component. Both are included on this website.