When high schoolers pass Advanced Placement (AP) exams, they can earn college credits, making them more likely to complete college within four years and likely increasing their earnings in adulthood. Fees of $99 per exam, however, deter many students from participating. In response, both the College Board and the federal government partially subsidize fees for low-income students, and states have increasingly moved to do likewise. Evaluating the efficacy of one variation on such policies, researchers from Johns Hopkins University and George State University recently published a study examining the effects of North Carolina’s AP exam fee waiver, which covers costs for all Tarheel students taking these exams.