In New Zealand, Pacific immigrants are among the fastest growing ethnic minorities but, as a group, they are also at most risk of not realising their literacy and educational aspirations critical for achieving their human potential and wellbeing. This may be due, in part, to a misalignment in the shared understanding of academic success between students, parents and their teachers within largely non-Pacific school environments. This study aims to report levels of agreement in child-mother, child-teacher, and mother-teacher perceptions of Pacific children's academic performance at age 6 years. Method A cohort of Pacific infants born during 2000 in Auckland, New Zealand, was followed as part of the Pacific Islands Families study. Maternal home interviews were conducted at 6-weeks and 6-years postpartum, together with separate child and teacher elicitations at 6-years. Pairwise agreement of academic performance responses was assessed using Cohen's weighted κ statistic, along with symmetry and marginal homogeneity tests. Results At 6-years, information was available for 1,001 children and their mothers, and teachers' evaluations for 549 children. Negligible to slight agreements and significant asymmetry were found between the child-mother (κ = 0.03, 95% CI:-0.03, 0.09), child-teacher (κ = 0.04, 95% CI: 0.01, 0.08), and mother-teacher (κ = 0.07, 95% CI: 0.03, 0.11) pairwise assessments-with children and mothers more likely to rate Pacific children's academic performance higher than their teachers. Significantly higher concordances with teacher assessments were found among mothers with post-secondary education, proficiency in English, and stronger alignment with New Zealand culture and for children who performed strongly on a standardised measure of performance relative to their peers.