This paper contrasts approaches to supporting ethno-cultural diversity in education in Canada, the USA and India through the lens of the experiences of the Tibetan diaspora. All three countries self-identify as linguistic and ethnically diverse states that value multiculturalism. These shared values make them insightful comparative cases to consider the role of public education "vis-a-vis" its impact on ethno-cultural diversity within pluralistic societies. The case used to conduct the comparison is that of the Tibetan diaspora, an ethno-cultural migrant minority found in each country. Three prevailing ethno-cultural diversity orientations are identified -- "integration", "achievement" and "sustainability" -- to describe prevalent approaches in Canada, the USA and India, respectively. The paper concludes with implications of the skewed orientations in each context, proposing a more balanced use of all three orientations for more robust and comprehensive supports for ethno-cultural diversity in education.