Where did Madame C J Walker go to school?

Madam Walker had very little formal education as a child. She later went to night school in St. Louis. As she became more successful, she hired a personal tutor. She was largely a self-taught person, as were many people who lived during the late 19th and early 20th centuries when very few Americans finished high school or college.

Source: On Her Own Ground: The Life and Times of Madam C. J. Walker by A'Lelia Bundles