Herring, Roger Dale. "A Study of the Relationships of Ethnicity, Sex, and School to Competency Level Achieved by High School Juniors on the North Carolina Minimum Competency Test for the Robeson County School System Between 1978-1983." Thesis. Appalachian State U, 1984.
Studied scores of 2,681 students in six county high schools on nine factors. Found significant differences when comparing ethnicity to mathematics scores, reading scores, and pass-fail rates.