IMPACT Europe will develop an evaluation toolkit to help professionals in the public and voluntary sectors design and implement an evaluation of their programmes tackling violent radicalisation, whether policies or interventions. The toolkit will also help professionals go beyond the evaluation of a single project by integrating promising practice into the design and implementation of future programmes.This evaluation toolkit will be composed of four elements:1) A standardised methodology, to provide professionals with a tool to conduct robust evaluations;2) An evaluation results database, to allow professionals to analyse these results over time, identify promising practice and develop a more informed understanding of violent radicalisation;3) A training course (including a train-the-trainer component), to build professionals’ capacity to design, carry out and learn from appropriate evaluations;4) A training manual, to provide easy reference for professionals applying the toolkit.