Aim: The aim of the article is to present the history of the Polish Tadeusz Kosciuszko School of Homeland subjects in London and to draw attention to the roles of teachers and parents in upholding Polish tradition and culture in the education of Polish children and young persons in exile. Methods: In order to implement the research, a monographic method, criticism of the analysis of documents and previous literature in this area was applied. The techniques used included internal and external analysis of documents, qualitative and quantitative analysis and formal analysis of documents. Results: Presentation of various forms of cooperation between the teaching staff and parents in the process of national education and children’s education, the aim of which is to maintain Polishness, provide children and young persons with the basics of the Polish language, transfer knowledge about the history and geography of Poland and instil love for the homeland, its culture, traditions and the raising of the younger generation. Conclusions: The great merit of the school is the fact that several generations of young Poles, born and educated in England, enriched in English society, but aware of their roots, their ties with Polishness and proud of their origin, have been brought up. The school broadens the horizons of its pupils and cultivates Polish traditions, communicates cultural heritage, history, language and religion, takes part in celebrations on the occasion of national holidays, patriotic celebrations, lectures and historical lectures. A highly qualified teaching staff teaches the Polish language, history and geography of Poland and religion, and educates students in the spirit of the Catholic faith. Dedicated parents who are members of the Board of the Parental Association support the work of teachers and the management of the institution. The school continues to develop and provides the best possible conditions for students and teachers to achieve further successes.