Although positive education has made significant progress towards fostering student wellbeing at the individual level through the application of positive psychology interventions, adopting a systems-informed perspective will support the field to also approach wellbeing at the classroom and collective levels. Arguably, this approach will promote a more widespread and sustained level of wellbeing in schools. The current conceptual paper focuses on how the classroom as a system can be used as a powerful context to create collective wellbeing. We define group-level flourishing, explain how a systems-informed perspective allows classrooms to create collective wellbeing, introduce the Flourishing Classroom Systems Model, and consider implications and applications of this model.