‘Mazzini’ High School offers students three diploma tracks leading to certificates in Languages, Human Sciences, and Scientific subjects. For this reason, our European development plan aims at the training of teachers in three main areas, namely 1 ) foreign language teaching/learning methodology for L2 teachers (English , Spanish, German), 2 ) training in the CLIL methodology for teachers of non-linguistic subjects who teach their subject in a foreign language (English, French, German) both in the third, fourth and fifth years of the Modern Language Curriculum and in the last year of Scientific and Human Sciences and finally 3 ) the training of Natural Sciences teachers in innovative methods of teaching / learning like IBSE (Inquiry Based Science Education ) . We expect to involve 9 teachers , 3 which of Foreign Languages with some previous experience of European projects that intend to receive further training in methodology and want to upgrade their linguistic competence. We would like to provide for the training of 4 teachers of non-linguistic subjects wishing to be trained in CLIL methodology and 2 of Natural Sciences, motivated to experiment with innovative teaching methods. Both groups of teachers should possess at least a B1 level of proficiency in the language in which the courses are delivered . The activities described above will be agreed with the partner institutions both in the preliminary stage for the effective preparation of the participants and the convergence of the objectives of the training and the methods of assessment of skills, both in progress , even with the use of a dedicated Moodle platform of the school, and during the follow-up of the course, to encourage the exchange of material produced with colleagues from other European countries and the initiation of partnerships and student mobility . As a result, in the short term , we expect to introduce in the classes innovative ways of learning and to share within the Departments . The expected long-term benefits are: greater internationalization of curricula, an incentive to the mobility of the entire staff of the school, especially of students, and an effective and long-lasting exchange of experiences with educational institutions in other European countries .