This study examined the mediating role of student school motivation in linking student victimization experiences and academic achievement among a nationally representative sample of students in 10th grade. Structural equation modeling supported that there were significant associations between student victimization and academic achievement for high school students. Give these significant associations, identification of the cognitive mechanisms that underlie these relationships is critical to understanding the plight of repeated victims. Our results indicated that students who reported frequent peer victimization also reported reduced school motivation (self-efficacy and intrinsic motivation), resulting in lower achievement in both reading and math. These pathways existed after accounting for differences in achievement that may be due to socioeconomic status and gender.