That figure is fairly consistent with what we see in the general male population, controlling for age. (scientificamerican.com)
In the case of football, Single - A stands for school districts with total male population, grades 9, 10 and 11 of 185 or lower. (questeq.com)
When about half of the black male population is unemployed during a time of rapid economic expansion, it's not unreasonable to demand that schools hire black teachers. (hechingerreport.org)