This article is a systematic literature review aimed at providing a comprehensive overview of the implementation of the Kahui Ako | Communities of Learning policy in Aotearoa New Zealand. This policy seeks to improve student outcomes through collaborative networks of schools emphasising the importance of network leadership in initiating and co-ordinating systemic change. This review examines the available evidence on the ways in which these school networks operate and how network leadership responds to local needs and environments. Review data included a total of 16 studies from the empirical literature resulting in four main organisational processes and patterns of interaction: (1) relationships building focusing on trust; (2) press for system-wide coherence; (3) knowledge exchange; and (4) collaborative work. Our findings suggest that achieving high levels of alignment and coherence within the Kahui Ako policy is a key factor for meaningful implementation, challenging to achieve, and requires ongoing attention.