This study addresses a knowledge gap in the literature about early adolescent cyberbullying victimization and the related positive and negative emotional wellbeing and academic achievement outcomes experienced over time. The study examines 9139 South Australian students (aged 10-13 years) who reported on cyberbullying status in Grade 6, and explores the relationship with emotional wellbeing and academic achievement outcomes measured in Grade 7 and Grade 9, while accounting for range of child, peer, school, and community covariates. Using mixed effects modeling, the results show that cyberbullying victimization is associated with significantly lower levels of happiness, life satisfaction, and higher levels of sadness, and worries over the shorter term (Grade 7), and significantly lower levels of reading and numeracy sustained across the longer term (Grades 7 and 9), compared to non-victimization. The results indicate that early adolescent cyberbullying may be associated with poor emotional wellbeing and academic achievement as one progresses through formal school and highlights the importance of considering the outcomes of bullying victimization beyond the immediate instance.