Over three decades, Farmer Field Schools (FFS) have proven to be fertile spaces where women and men from farming communities generate, test, and adapt ideas that respond to local challenges and support food security and nutrition, climate resilience, ecosystem health and inclusive rural development. This brief speaks to rural development organizations, researchers, and practitioners seeking practical pathways to accelerate innovation for agrifood system transformation. It provides a new lens to intentionally nurture and scale innovations in the context of FFS interventions, and highlights practitioners' recommendations to improve the contributions of the FFS approach to innovation towards more sustainable, fair and resilient agrifood systems. It is part of a new series of guidance notes and factsheets which draw on documented experiences of innovations in development interventions using FFS.