It is important that local authorities monitor and evaluate their PREVENT projects and wider programmes of work. Effective evaluation of your activities will not only help you build and use evidence in reporting against National Indicator 35 (Building Resilience to Violent Extremism)1, but will also help you to understand what is working so that you can make any necessary changes, replicate good practice and learn lessons for the future., There are clearly challenges in evaluating local PREVENT activities: there may be sensitivities among local communities, it may take a long time for change to occur, and it is sometimes difficult to attribute a positive outcome to a specific activity. Despite these challenges there are a number of steps you can follow that will help you generate useful data and capture learning from your PREVENT work., These guidelines are designed to help you think about the evaluation of your local PREVENT projects or programmes. They take you through a number of steps that help you to design and carry out an evaluation and collect evidence from a range of sources. Most importantly, they provide a framework for you to set criteria for success and to systematically evaluate your work.