Barbara Sizemore (December 17, 1927 – July 24, 2004) was an American teacher and researcher in the field of education.

[1] Barbara Ann Sizemore was born to Sylvester and Delila Lafoon in Chicago, Illinois, and was raised in Terre Haute, Indiana.

It was there that she began her research on low-income African American students and standardized tests, which she continued as dean of the School of Education at DePaul University in 1992.

[4] Sizemore's first book, a version of her doctoral thesis[3] titled The Ruptured Diamond: The Politics of the Decentralization of the District of Columbia Public Schools, was published in 1981.

Sizemore served as Professor Emerita at DePaul University, and a scholar in residence at the National Alliance of Black School Educators from the 1970s until her death.