The project contributed to the fulfillment of the Sustainable Development Goals (SDG´s) through service learning (learning for the place, developing cooperation at the local level…).The aim of the project was to support selected team leaders (internal mentors), program development and creation of methodologies. In this project, educators together planned, observed and reflected on, developed their experience with active teaching methods in the field of Sustaianble Development Education (SDE) and their skills for leading and mentoring colleagues.Our primary aims were:1) Develop and disseminate a methodology for: - how to adapt ESD methodologies to the needs of individual educational institutions. - how to effectively develop competencies for education in the field of sustainable development through collegial support.2) Training Team Leaders - Developing skills for collegial support and mentoring in education for sustainable development.3) Contribute to the implementation of sustainable development goals with a new methodology for educators in European countries.At the beginning of the project, a course was held for consultants from partner countries (6 participants), who deepened their skills in mentoring and collegial support. Thanks to the course, they became consultants - external mentors for 6 participating educational institutions (2 in each country) and guided them through the process of implementing Sustainable Development Education (SDE) into their teaching through mentoring. There was a need to respond to the covid-19 pandemic and individual training proved effective. Based on their experience, a methodology for consultants was created as one of the outputs of the project.There were also 2 courses for educators (one with personal participation and one online), where they acquired basic information and skills for working with SDE programs and mentor competencies. Internal mentors from 6 educational institutions then created teams of 2-4 educators who implemented the SDE program through mentoring and collegial support - joint planning, implementation and reflection. During this process, they were supported by a consultant. Based on this work and experience, a methodology was created for internal mentors in the field of SDE and promotional video as further outputs of the project. In connection with the changes due to the covid pandemic, three more originally unplanned outputs related to the topic were created (conference proceedings, online tips for educators and consultants, adapted material for Austrian educators).The outputs of the project were disseminated through 3 conferences (two online and one in person) among universities, other educators, consultants, etc. Their content included debates, lectures, workshops on how to effectively develop the competencies of educators to work with SDE programs.The evaluation of the project (in the form of a questionnaire) shows the benefits of the project at several levels. On the one hand, it is a shift in the behavior of the participants themselves (from the point of view of sustainability), and on the other hand, in the area of ​​skills development. Furthermore, the team leaders also emphasize the enthusiasm and activation of the participants when working on the project. Respondents note that, thanks to their involvement in the project, their teams are able to cooperate well in carrying out project tasks, which has also helped to improve communication, unity and further functioning of teams in the future. According to the answers, the project was motivating for the participants and helped them achieve challenging goals. The international context of the project is also perceived and appreciated. It is obvious that the project had the intended results, especially in the area of ​​motivating participants to make greater use of collegial support, to implement projects and in the area of ​​participants' ability to implement and manage projects.During the project, a larger number of members of local communities were also involved in various ways, thus laying the foundations for future active cooperation of educational institutions and communities or strengthening this cooperation.