This article reports research into associations between students' perceptions of the school climate and self-reports of ethnic and moral identity in high schools in Western Australia. An instrument was developed to assess students' perceptions of their school climate (as a means of monitoring and guiding schools as they are challenged to become more inclusive and grapple with increasingly diverse populations) and administered to 4067 students, 63 % of whom were aged between 12 and 17 years, in eight schools. The same students also responded to a survey developed to assess ethnic and moral identity. Analysis of the data indicated strong, positive associations between the school climate and students' ethnic and moral identity. The results suggest that, for schools wishing to promote students' ethnic and moral identity, it would be beneficial to consider important elements of the school climate identified in the new survey.