This document summarizes the Collaborative Learning Initiative in Ireland North West. It describes the purpose and methods of the initiative, which uses collaborative action research to help teachers solve classroom problems. Teachers identify issues, investigate them, take actions, and evaluate results. Findings are then shared. The initiative aims to build teacher capacity and drive sustainable improvements in practice and student outcomes. It is seen as effective because it is teacher-driven, collaborative, grounded in practice, and supported over time. Participating teachers remained engaged and want to continue the process.