It is well established that it is common for healthy adults to obtain one or more low scores when multiple neuropsychological tests are administered; however, very little is known about the normal frequency of high scores. The current study reports high-score base rates for the National Institutes of Health Toolbox for the Assessment of Neurological and Behavioral Function Cognition Battery (NIHTB-CB) normative sample. We hypothesized that high scores would be common and increase in frequency with greater education and crystallized ability.