The Acquincum Altalanos Iskola was founded in 1985 in the 3rd district of Budapest, in parallel to the construction of the Acquincum (Pók utcai) residential area. Thanks to the newly arrived resident's children the school was operating at 120% capacity, which only after a few years decreased to a standstill at normal capacity. At this time, the school's leadership realized certain opportunities and wishes of parents, followed by agreeing with the teacher's association to adopt a dual lingual programme in the school. After two years of preparation and practice, the school adopted its new face on September 1, 2008. Our idea brought with it our hopes, and thus our school is constantly being looked at and our popularity and integrity are continuously rising. The amount of students at the school is around 600 children. The teaching staff has changed not only in number, but also evolved and shaped itself over the years. Our language classes have also been staffed by native English speaking teachers over the past years. These teachers not only help our students speaking and listening, but also if needed fellow English teachers. According to our school's curriculum, the students in first and second grade learn gym, drawing and technics subjects in the objective language (English). From the third grade onwards, students also study Science, followed by a Technology class (IT) expanding the amount of English subjects. In the higher grade, Choir, Science, Geography, Gym and objective Language Civilization subjects are taught. These classes guarantee the objective of having 30 % of all classes provided in English language, constantly expanding and furthering the students’ language competency. We strive to develope and measure the achievements of our pupils: most of our pupils by leaving the primary schools passed the B2 Cambridge language test. We offer numerous afternoon activities to many children as sports, different arts and crafts electives, choir and instrument lessons. The 2012-2014 lasting Comenius Multilateral project (eClil4You; http://eclil4you.weebly.com) proved, that our institution is capable of working together with Europian schools excellently, and the projects effects are still felt. The CLIL teaching method is more and more present in our teaching methods list. In order to further ourselves in the workplace, many teachers have been present at the Comenius Life-Long advancement, and participated in CLIL teaching method training, as well as language courses. The English subject teachers have a great calling to respond to: to start, they are dedicated teachers to the subjects they teach, but they must also be able to do this in a different language, which in our case, is English. The foreign language's everyday usage is part of CLIL teaching, therefore we place great weight on cooperative teaching. Due to our needs, two of our colleagues took part of a CLIL course, one for primary the other in secondary level. Our focus continues for not only the school's English language teacher population should be familiar with the language, but other teachers as well as the school's leadership. The institution ensures that the foreign language aspect of our school is protected by the need for all workers to have a basic understanding of English. Thanks to this project, six of our colleagues were able to take part in different teacher training courses which beside the improvement of their language knowledge, provided them new teaching techniques as well. Thanks to the blog, (http://aquincum5.webnode.hu/ ) all the mobilyties were easy to follow for the whole school community. By returning, their reports about the mobilities were published on the school's website:http://aquincum5.webnode.hu/. Thanks to the project our colleagues became familiar with the CLIL teaching method (Oxford, Portsmouth), are be able to use modern IT tools (Scarborough) during their lessons and are familiar with the cultural background of the countries they stayed in. These kind of knowledge come in hand while running the so called Language Civilization lessons, which covers all kind of information about English speaking countries. Those colleagues who attended a language course developed their language and communication skills and became more fluent in speaking English. During the mobilities our colleagues tried to develop a good partnership with the fellow teachers and are ready to run an eTwinning project with some of them. By returning they held different dissemination lectures for the staff, the pupils, the parents’ organizations and last but not at least for the other English teachers working in the same district. The result of the project became part of the so called Teacher Portfolio as well. We do hope that the efficiency and the results of the present project will encourage other staff members to take part in similar Erasmus+ projects in the future.