Sri Lanka’s National Policy on Social Cohesion and Peace Education (NPSCPE) identifies ‘whole school culture’ as one of the seven key strategic areas to foster social cohesion. A range of initiatives has been introduced by the Government and the NGO sector to implement various aspects of the policy however, the ‘whole school culture’ is not an area explored in detail by researchers or practitioners. This research was commissioned and funded by the British Council under its flagship education programme, TRANSFORM, and carried out by Save the Children in Sri Lanka. The research seeks to build a body of evidence on whole school culture fostering social cohesion, and develop a roadmap to achieve broader social cohesion goals in the general education system