A simple step might help undercut the pernicious effect of grading bias, a new study found: Articulate your standards clearly before you begin grading, and refer to the standards regularly during the assessment process. In 2020, more than 1,500 teachers were recruited and asked to grade a writing sample from a fictional second-grade student. All of the sample stories were identical—but in one set, the student mentions a family member named Dashawn, while the other set references a sibling named Connor. Teachers were 13 percent more likely to give the Connor papers a passing grade, revealing the invisible advantages that many students unknowingly benefit from. When grading criteria are vague, implicit stereotypes can insidiously “fill in the blanks,” explains the study’s author. But when teachers have an explicit set of criteria to evaluate the writing—asking whether the student “provides a well-elaborated recount of an event,” for example—the difference in grades is nearly eliminated...