Born Kathryn Dorothy Frederick, Clarenbach was raised in Sparta. After graduating from Sparta High School as valedictorian at age 16, Clarenbach went directly to UW-Madison to study political science. By 1946, the 22-year-old had earned her bachelor’s, master’s and Ph.D.
She began her women’s rights career while devising a continuing education program for women through the University of Wisconsin-Extension. While she saw success with the program, her husband, a real estate agent, was able to rework his schedule to stay home with their kids.