The Budapest Fazekas Mihály Practising Primary and Secondary School has been a highly prestigious school at both national and international levels. The 12-grade school has a nationwide recruitment area and its main profile is developing talents. Most of our students come from big families, a lot of them are from the countryside and live in dorms during their secondary studies in Budapest. We have more and more students with special needs, for whom the chances of higher studies are based solely on the education provided by our school. The annual competency assessment shows that the value added by the school is significant in the students’ performance. This is guaranteed by the teachers’ up-to-date knowledge and continuous professional self-improvement. Our students participate in international student Olympiads, national and international competitions year by year. Our special Mathematics, Science and Social Science classes are popular, we have taken lead position for years among the Hungarian secondary schools on the basis of academic achievement. The school’s profile includes teacher training, providing pedagogical-educational support for schools in Budapest. We provide teachers with in-class training, workshops, lectures, professional and methodology conferences, organize competitions and teacher training courses. Our colleagues are also often requested by foreign teacher guests to teach their subjects (Mathematics, Chemistry, Biology) in English. Our students have a good command of English. Several of our non-language teachers speak English, but they need regular language skills development. Besides, our school has connections with several foreign institutes on a regular basis, for which the teachers’ language knowledge and language knowledge development is inevitable. Therefore, developing language skills was one of our main project goals. We consider it a great success of the project that several of our colleagues got involved in such activities in this academic year. Many experienced teachers of our school are about to retire in the near future. So that the school can fulfil its task on the expected high level, it has become important that the young colleagues gradually gain ability to meet the high demands. To be able to provide all these and maintain educational standards at the same time the involvement of grant sources is significant for the school.Because of the above mentioned reasons, we decided to start our Erasmus+ project. The school’s development plan aims that the school keep pace with the constant changes in the Hungarian educational system and find answers to the challenges of the 21st century. It promotes continuous self-development, professional-methodological renewal, creating and disseminating good practices, knowledge about foreign educational systems, integrating experiences into our everyday teaching practices and sharing knowledge. Several departments of the school sent participants to the courses abroad, who later shared the acquired knowledge during the academic year, fulfilling the second aim of the project. As the extensive use of ICT was present in all courses, our colleagues’ digital competences improved significantly as well. That was our third project goal. The sustainability of the project results is based on sharing the above knowledge and the improvement of digital facilities in the school. Selecting the applicants for the project we put special emphasis on involving all school levels (lower primary, primary, secondary) and age groups. As a result, junior teachers, a head of department and lead teachers are all parts of the project team. Therefore tradition, experience and youthful dynamism have added to the successful accomplishment of the project. The applicants all take an active part in the organization and the implementation of professional activities on both department and institutional levels. Lower primary school teachers, science and social science teachers have all been participants of the project. Most of the 14 teachers participated in summer courses so that they can make good use of the obtained knowledge during the next academic year. 10 people attended CLIL, language, ICT, quality enhancement courses organised by ISP in the UK. 3 teachers attended CLIL, methodology and cultural courses in the Republic of Ireland organised by Emerald Cultural Institute. 1 teacher attended an ICT course in Germany. The project opened new horizons in cooperation within and between school departments, which was our fourth project goal. Acquiring cooperative techniques has made communication and cooperation at inter-department and institutional level more efficient. In addition to our existing international partnerships we made new contacts with educators, head teachers, supervisors, teachers of all subjects representing several educational institutions in Europe, promoting our academic work and achievements.