The study will conduct a mixed-methods natural experimental evaluation of the long-term effectiveness, cost-effectivenes clinical trials

Creating Active Schools (CAS): Investigating sustained implementation and long-term (cost)-effectiveness on children’s physical activity in multi-ethnic and socioeconomically challenged communities in Bradford

This study looks at how a programme called 'Creating Active Schools' helps primary school children in Bradford get more active. It's especially for children in diverse and less wealthy areas. Researchers want to see if the programme works over a long time to improve kids' health and well-being.