In this article we argue that the asset-based approach is one explanation for sustainability in programmes supporting vulnerable children. We structure our argument by formulating five questions and then pursuing tentative answers to them. We start our contention by highlighting the particularity of the challenges faced in schools to support vulnerable children. We then consider the common denominators in programmes that have shown evidence of sustainable practices for supporting vulnerable children. This is followed by a deliberated link of the identified sustainability factors (e.g. common denominators) with the asset-based approach as a theoretical framework. Subsequently, we consider why the asset-based approach can be considered in terms of supporting vulnerable children in education. We indicate the similarities between the asset-based approach and current discourses focusing on the notion of schools as nodes of support and care. We conclude by suggesting that knowledge of asset-based good practices could be shared with families in school-based sessions, thereby developing schools', families' and communities' capacity to support vulnerable children.