The idea of submitting a project within the Key activity 2 of the Erasmus+ programme came from the shared motivation of six members of the European Network of Learning and Teaching in Agriculture and Rural Development (ENTER) to exchange good practices in terms of interdisciplinary approaches and didactics-training of VET teachers in the international environment. All six institutions have many things in common: They are institutions at a tertiary level of education - teacher training institutes for VET teachers and they offer both pedagogical and psychological guidance to VET teachers. Doing research in education sciences and through international projects, partners focus on similar issues such as didactic of vocational subjects, green education, intercultural education, interactive teaching methods, teachers´ competences, sustainable development etc. The target group of the ACROSS project were young VET teachers who teach vocational subjects within agricultural or other related fields and concurrently studied pedagogy at the partner training institutes in part-time or distance learning. The main aim of their education is to become fully qualified teachers both with vocational knowledge and pedagogical skills. The second target group of the project were academic staff from partner institutions whose expertise is didactics of vocational subjects, facilitating practical training, environmental education, intercultural education and social pedagogy. Their main role in the project was preparing teaching materials for two summer schools, teaching at the schools, taking part in short-term staff trainings, reviewing worksheets and exchanging good practices in terms of interdisciplinary and sustainable appraoch when working with each other and with the learners. The main task of the project were two intensive courses (summer schools) for young VET teachers from six partner countries. At both summer schools, young VET teachers and academic staff worked, learnt together as well as exchanged good practices how to deal with interdisciplinary approaches and how to integrate the social responsibility and sustainable development approach to their lesson plans and their teaching.The stakeholders of the project were headmasters of vocational schools, who were informed about the project results at the international ENTER conference in Berlin 2018 and at six national meetings in 2019.The topics of the ACROSS summer schools were cross-sectional topics of vocational subjects and civics and environmental education, as well as integration of social and “green pedagogy” into lessons at vocational schools. Students had to verify the newly acquired knowledge and skills through project-based teaching at two Dutch vocational schools and at a German national museum during two-day field trips.The remarkable impact of the project activities was not only on the professional competences of both project target groups but also be on the pupils at secondary schools. Moreover thanks project activities, trained VET teachers will bring new approaches to the lessons thereby focussing more on socially acute topics in their lessons. From these aspects the main aims of the project risen: • to motivate mobility teachers to extend their professional portfolio by introducing methods for finding cross-curricular links between concrete vocational subjects and civics and environmental education • strengthening professional and personal competences of young VET teachers and involved academic staff by designing tasks that address interdisciplinary and socially acute topics during the two summer schools • to encourage young VET teachers to introduce principles of education for sustainable development to teenagers in rural areas • to improve and adapt the training of young VET teachers to the European environment by organising international teams of learners • to create teaching materials accessible in two e-learning courses and the ENTER website http://www.enter.educagri.fr/projects.html • to encourage partnerships between six European teacher training institutes, giving the chance to experts to be in contact and know more about their common topics The other project output was, apart from the already mentioned professional and personal development of participants, reviewed 48 worksheets created during two summer schools. Another interesting project product were teaching materials, developed by academic staff of partner institutions especially for both summer schools. These materials are available on the Eliademy platform within two e-learning courses.Project results were published in national magazines, local press, the ENTER Study Days´ proceedings and disseminated at six national meetings, at several national or international events (seminars, conferences, meetings).