This document focuses on the implementation phase of farmer field school (FFS) programmes and provides guidance and tools that will help farmer field schools to bring about the change expected by the programme and the communities it supports, by setting up a robust monitoring, evaluation and learning (MEL) system. It also introduces impact assessment as an integral management function linked to monitoring, evaluation and learning in FFS programmes. It is aimed at project and programme designers, managers and staff involved in planning, monitoring, evaluation and learning of project/programmes with a farmer field school component. It also targets those who will be involved in the initial design, planning, follow-up of monitoring, evaluation and learning and impact assessment to improve programme implementation. The document outlines background information and tools to help ensure that implementation of FFS programmes will lead to the anticipated outputs, outcomes and impacts, by setting up a robust MEL system and impact assessment methodology/framework for the improvement of ongoing FFS projects and programmes and the design of new ones.