Despite the educational and professional advances made by minorities in recent decades, African Americans remain woefully underrepresented in the fields of science, technology, mathematics, and engineering. Even at its peak, in 2000, African American representation in engineering careers reached only 5.7 percent, while blacks made up 15 percent of the U.S. population. Some forty-five years after the Civil Rights Act sought to eliminate racial differences in education and employment, what do we make of an occupational pattern that perpetually follows the lines of race?

Race, Rigor,...