Part of the issue that causes the disparity between ethnic groups and employment rates that often gets overlooked is the funding system used to drive our education system. Statistically speaking minorities are less likely to have access to adequate funding for their scholastic needs due to the relative economic strength of the communities that they are more likely to be domiciled in. Underfunded schools = less access to adiquate education = less financial opportunities. While this is not the totality of the issue that creates the disparity that your pointing out it does explain part of the inherent disadvantage that impoverished individuals have in entering the job force.