John Mackey received an overall scaled score of 159 and a percentile rank of 74% on the Chemistry Major Field Test taken on April 8, 2016. His subscores were 64 in Physical Chemistry, 55 in Organic Chemistry, 52 in Inorganic Chemistry, and 60 in Analytical Chemistry. The scale range for the total score is 120-200 and percentile ranks indicate the percentage of test takers who scored lower.