School connectedness, or a sense of belonging to the school environment, is an established protective factor for child and adolescent health, education, and social well-being. A growing body of evidence indicates that a whole-school approach, such as the health-promoting school model, is effective for promoting school connectedness. A whole-school approach builds school connectedness through curriculum, teaching and learning; school policy, organisation, ethos and environment and through partnerships between school staff, students, families and health service and community agency...