Established in 1973, Costeas-Geitonas School (CGS) is one of Greece’s oldest and largest for-profit co-educational private day schools which provides educational programmes from pre-school to secondary level. In reaction to the evolving needs of Greek society and the dynamic international educational reality it has a single goal: to offer its students a modern educational approach and a variety of choices that correlate to today’s reality. In September 2014 CGS established the first STEM (Science-Technology-Engineering-Mathematics) Academy in a Greek School which aims at: - promoting inquiry based learning and the "learn by doing" approach - the horizontal use of technology (tablets, specialised software, science simulations, 3D printer, etc.) - the connection of STEM subjects to student’s everyday life -the enhancement and interconnection of STEM subjects In order to accomplish the above objectives, the school has identified the need for further training its teaching staff in the use of new technologies, the transition to a more practical, student-centered, experimental, inquiry-based and interactive pedagogical approach, the production of digital educational content and the connection with research institutions and schools in Greece and abroad for the exchange and dissemination of good practices. It is also necessary for the managing staff of all educational levels (from pre-school to secondary level) to redefine the school's priorities, develop appropriate educational policies to meet the above objectives and provide appropriate tools for teachers to continuously develop and adapt to new requirements of the educational system, professional development and society in general. The school development plan aims to enhance teaching and learning as a whole through the strengthening of specific teaching components (elements of the STEM philosophy and approach), at all educational levels from pre- school to secondary high school. Even though the mobility activities selected for the following year are limited to seminars and staff training (21 in total), they cover a wide range of themes that will be able to offer teachers of all levels the necessary knowledge and skills and the confidence to incorporate STEM approaches into their daily teaching practices, even in subjects that at first sight do not seem relevant, such as art, physical education and history. The activities are grouped as follows: a) Creative and Inquiry-Based Learning - New Pedagogical Methods b) Strengthening the teaching of STEM subjects through new methods, tools and technologies c) New technologies as a horizontal tool to support interdisciplinary teaching and learning d) Good practices, leadership, benchmarking The above actions will involve teachers from all educational levels as well as principles and level coordinators (35 in total). Through the selected trainings teachers will acquire new knowledge and skills on the use and application of ICT in classroom activities, on creative and inquiry-based learning and on the basic STEM philosophy which promotes problem solving and "learn by doing". Moreover, it will offer networking and synergy opportunities with teachers and schools in Europe to exchange good practices and therefore enhance the school’s European dimension. It is also expected that the training activities will have a “domino” effect and their results will be transmitted to other school teachers, through a specific internal dissemination process. The ultimate beneficiaries of course are the students who will benefit from a comprehensive switch in the educational system with emphasis on STEM, the use of ICT, critical thinking, imagination and creativity, elements which will prepare them for their professional development and subsequently their future role as responsible and thinking citizens of Greece and Europe. Finally, the school traditionally values the exchange of good practices with other schools in Greece and abroad. During the school year, it organizes a series of open and free events for students of CGS and other schools, parents and the local community (eg STEM Induction Day, CGS Open Day) and also runs summer programs for students. In addition to the above, an ideal platform for exploiting and disseminating the results in Greece and throughout Europe are the European programs Inspiring Science Education, Go Lab and Open Discovery Space, in which CGS has been selected as a pilot school.