This qualitative study explores the motivations, barriers, and facilitators underpinning the adoption of the Mindset Teams programme in primary schools across Scotland. Semi-structured interviews were conducted with 18 teachers across six Mindset Teams schools and 14 wider stakeholders working across local, regional, and national levels. Findings suggested underpinning factors across the socio-ecological model, with differential themes identified, including six supporting school motivations and ten spanning barriers and facilitators, across teacher and stakeholder data. Limitations, implications for school and educational psychology (EP) practice, and suggestions for future school-based mindset interventions are considered.