Educational neuromyths are incorrect ideas about the brain and learning. These ideas pose a risk if they impact learner outcomes. The concern about neuromyths has spurred global research, including teacher surveys about their identification. If such research leads to corrective strategies, the potential beneficiaries are teachers, students, and the field of educational neuroscience itself. This research relies on accurate neuromyth measures, and yet the topic of measurement has been largely ignored. In this review, we focus on key measurement issues surrounding the assessment of neuromyths, and we consider measurement improvements. We show that the framing of items, both the fact and neuromyth, must be improved in future research. These changes are vital to realize the potential benefit of educational neuromyth research.