Crucial to promoting Indigenous youth autonomy is engaging with young people in research processes in a way that promotes their voice and cultural agency. Like other young people, taitamariki Māori perceptions of their own lives and experiences provide essential input towards creating better conditions for and with them, now and in the future. In planning Harmonised, our school-based taitamariki and Māori-centred project promoting healthy intimate partner relationships that ran from 2016 to 2020, we found little literature to guide our engagement processes. In this article we share learnings from our research, how we engaged with schools, and how we worked with Indigenous young people to hear their authentic voices.