Background: Practitioners who support unaccompanied minors (UAMs) come from different professional backgrounds and often are not appropriately trained to address children’s complex mental health needs. This gap informed a training programme across all accommodation centres in Greece. Methods: The aim of the Train-of-Trainer (ToT) national programme was to upskill trainers from 17 organisations to cascade knowledge. Training was interprofessional, trauma-informed and culturally sensitive. A pilot implementation involved 199 practitioners from all disciplines. A sub-sample of 33 practitioners, nine managers and six trainers shared their experiences in focus group discussions, which were analysed through a thematic framework. Results: Participants found that the programme was useful in generating knowledge relevant to children’s needs and their roles, addressing the emotional impact of trauma on staff, sharing learning across professional disciplines and being interactive, but systemic support should be put in place for benefits to be sustained. Conclusions: Train-of-Trainer is a resource-effective approach to upskill mixed staff groups across many organisations. This should involve caregivers and staff with limited educational opportunities, while accommodating for different professional needs. Training should be integrated to service budgets, specifications and structures. © The Author(s) 2024.

DOI: 10.1177/13591045241242324
ISSN: 13591045