Crandell, Prudence (krănˈdəl) [key], 1803–89, American educator and abolitionist, b. Hopkinton, R.I. In 1831 she opened a school for girls in Canterbury, Conn. Her decision to admit a black was protested, and in 1833 she decided to devote the school entirely to the education of African-American girls. She was arrested and tried, the judgment against her being reversed on appeal in 1834. In that year she gave up her work, married the Rev. Calvin Philleo, and moved to the Middle West.