Prudence Crandall was an American schoolteacher and activist who became a pioneer for civil rights in the 1830s. After establishing a boarding school in Canterbury, Connecticut, she admitted Sarah Harris, an African American woman, creating one of the first integrated classrooms in the United States. This decision triggered intense local opposition, leading to legal battles and physical threats. Rather than retreating, she pivoted her mission to specifically educate African American girls, transforming her institution into a dedicated academy for students of color.