Strengthening the training skills of trainers is one of the National Institute of Justice priorities, raising the professionalism of the NIJ beneficiaries being directly proportional to the quality of training and training skills of the NIJ trainers. That is why the first professional development activity of this year organized by the National Institute of Justice in partnership with the Council of Europe (CoE) included a winter school in the field of adult training methodology. The event, addressed to a group of trainers, took place in January 11-12, 2023.