The focus of this TLRI project was on sustaining gains in reading comprehension made through TLRIfunded interventions in two clusters of schools in South Auckland. The aim was to develop a model for sustaining effective teaching and school practices so that student achievement continued to improve once the interventions ended. This involved identifying and explaining the conditions that enabled schools to continue improving achievement; explaining how the conditions interrelated; and how these relationships resulted in differing patterns of achievement after the intervention. Research questions Can two clusters decile 1 schools with mainly Māori and Pasifika students sustain student achievement gains one year after their participation in TLRI reading comprehension interventions? Sustainability