This New Zealand study analysed de-identified aggregate data from the Auckland Counties Manukau District Health Board (CMDHB) Public Health Nurses Database on the 11-yearold tetanus and polio vaccinations from 2005, to determine percentages of form return, consent and vaccination receipt by ethnicity, including relative risks for Māori compared to non-Māori students. Reasons for vaccination refusal were also analysed. Overall, 48% of Māori and 56% of non-Māori in Year 7 in CMDHB in 2005 (n=8642) were immunised through the school-based programme. Assuming that parents who stated their child had already received these vaccinations were all correct, the estimated overall coverage in this population for the recommended Year 7 tetanus vaccination was 67% (53% for Māori, and 71% for non-Māori).