This study tests the general hypothesis that academic performance is related to extremes in peer choice (high acceptance, high rejection, and neglect) of junior and senior high school students. The 3,917 students of 7 junior and senior high schools were tested sociometrically to measure peer choice. Academic performance of individuals who were highly accepted, highly rejected, neglected, and within a control group was studied. The findings support the hypothesis that academic performance is related to extremes in peer choice.