Achieving greater alignment with national curriculum and local school and teacher objectives alongside a deeper understanding of student needs can enhance the impact and reach of health promotion interventions. This study reports on teacher perspectives of a multi-pathway curriculum outline supporting learning (Grades 7-9) about sugary drinks. The outline was developed to support scale-up and sustainability of a successful sugary drink intervention trialed in four New Zealand secondary schools. Sixteen teachers from a range of subjects provided input via focus groups. Inductive qualitative thematic analysis was used to identify and interpret patterns within the data. Sugary drinks were perceived to be an important and engaging learning context. Teachers valued the potential long-term societal benefits of health-based learning and benefits to individual students and their families. They recognised students as health communicators and influencers within families and communities. Relevance to students’ lives and alignment with national curriculum and assessment objectives and teacher subject expertise were key factors in learning pathway selection. Teacher support is crucial in facilitating sustainable school-based health promotion, which often does not sit within a single curriculum area. Factors such as these, that teachers prioritise in their curriculum decision-making, must be understood and leveraged in school-based health promotion research.