With her husband Jonas Edward Johnson, she co-founded the Prentiss Normal and Industrial Institute in Mississippi, a rural school they opened in 1906. The school succeeded, and expanded to include secondary classes and a junior college by 1953. In 1955, the campus became home to the first
Heifer International program in the United States, when a campus dairy was built by the charity. She was president of the school from 1954 Johnson and her husband also founded Oak Park Vocational School in 1927, in
Laurel, Mississippi. This school focused on agricultural training courses. She was also active in the National Federation of Colored Women's Clubs, serving as its statistician for five years. She wrote a book about the work of Black clubwomen in Mississippi,
Lifting as We Climb (1940). She was named Outstanding Woman of the Year by the
National Association of Colored Women in 1951. ==Publications==