The learning outcomes and quality standards for teachers defined both in the development plan of Tallinn School No 21 and the letter of commitment for Elos Schools foresee consistent progress in professional growth and European and international orientation of the teaching staff. The given project "International In-Service Training Programme for 2016-2018", designed for a period of 24 months, includes 5 international in-service training events in the UK, Ireland and Portugal as well as job shadowing and teaching assignments for 2 members of administration and 1 subject teacher at the partner schools of Spain and The Netherlands. The total 8 members of the teaching staff included in the in-service training events are members of administration or full-time lower and upper-secondary school teachers of English, history and music operating also as project coordinators on different school levels.The project is carried by the need to pursue the teachers' purposeful professional learning with particular attention to such internationally valid areas as the Irish history, cultural awareness, authentic use of language with modern methodology and IT skills, CLIL and project and problem- based learning. The carefully short-listed teacher training courses offer a well balanced schooling both in the newest theoretical developments and practical workshops of teaching methodology. The planned training events will result in the participants' improved and up-dated command of a foreign language essential for conducting contemporary CLIL lessons and continuing or launching new international projects with schools across Europe. This multidimensional project also foresees job shadowing combined with teaching assignments in schools in Spain and the Netherlands. In addition to improved personal professional competences and social and cultural awareness, these training events will enable to exchange and learn from the innovative and successful practices across Europe and introduce European dimension to the day-to-day teaching and learning environment on all school levels from primary to administration.The project will be closely monitored by the in-service training project coordinator and the school management. Regular preparatory meetings with the trainees will be scheduled together with deadlines for evaluation and feedback reports. School's IT team has been assigned to lend their comprehensive technical support and advice for maintaining the smooth organization of any part of the training project."Educators for Educators" has long been an integral part of the in-service training module in Tallinn School No 21. The skills and competences acquired through the above-mentioned training events will systematically be shared at the school's quarterly in-service workshops. In order to ensure easy access to all theoretical and practical information, presentations and handouts will be uploaded on school's Intranet and on the project and teachers' blogs. Participating in international training events will enable to make contacts with educators with common objectives and start new, reliable partnerships for all school levels throughout Europe and thus further develop the European and international dimension in the education provided in Tallinn School No 21.