The aim of this article is to examine how school principals perceive cultural diversity and management. To this end, qualitative research was carried out for one semester in four secondary schools in Andalusia (Spain). Through interviews and discussion groups, triangulated with other qualitative research techniques, we explored the mindset and attitudes that the principals of these schools have towards cultural diversity and the importance of leadership in managing it positively, as well as the actions they take in this area. The outcomes highlight a negative conception of diversity (identified as a source of problems) and the predominance of a management model based on assimilation and compensation. In general, the principals do not perceive it to be their responsibility as educational leaders and practise a fundamentally bureaucratic leadership focused on management of immigrant pupils rather than their social and academic integration. The findings highlight the need to implement an educational leadership that promotes the development of an inclusive professional culture, the creation of collaboration networks and the celebration of difference.