Educator and activist Septima Clark used her passion for teaching to increase literacy rates in the Deep South, preparing Black citizens to pass the voter registration tests that were designed to disenfranchise them.

Guest: Elaine Weiss, author of "Spell Freedom: The Underground Schools that Built the Civil Rights Movement"

Septima Clark reader: Janice L. Jones

Photo Caption: Septima Poinsette Clark, 1973; Photo Credit: Avery Research Center for African American History and Culture, College of Charleston, Charleston, SC.

News footage courtesy of EasyStreet, Pond5, www.pond5.com