HEATHER MAC DONALD: The Bias Fallacy. It’s the achievement gap, not systemic racism, that explains demographic disparities in education and employment.

The median black eighth-grader does not possess even basic math skills. “Basic” skills, as defined by the National Assessment of Education Progress exam, means partial mastery of grade-related knowledge. Fifty-three percent of black eighth-graders scored “below basic” on math in 2017. Only 11 percent of black eighth-graders were proficient in math, and 2 percent were advanced. By contrast, 20 percent of white eighth-graders were below basic in 2017, 31 percent were proficient, and 13 percent were advanced. Only 12 percent of Asian eighth-graders were below basic, 32 percent were proficient, and 32 percent were advanced.

The picture was not much better in reading. Forty percent of black eighth-graders were below basic in reading in 2017, 17 percent were proficient readers, and 1 percent were advanced readers. Sixteen percent of white eighth-graders were below basic in reading, 39 percent of white eighth-graders were proficient readers, and 6 percent were advanced readers. Thirteen percent of Asian eighth-graders were below basic, 45 percent were proficient, and 12 percent were advanced readers.

But the only number that matter to today’s activists — and the woke executives desperately vowing to change their hiring and promotion policies — is the percentage of minorities in a company or a profession. When you’ve got diversity, who needs basic skills?