One of the factors that has a major impact on maintaining Czech national identity beyond the borders of the Czech state is the existence of Czech schools and teaching in the Czech language. Minority schools began to form in Croatia after the First World War and experienced further development especially after 1945, at that time hundreds of children in Croatia were taught in Czech language. Our aim is to build on the description of the current state of minority education in Croatia, which we described earlier (ICLEL 2018) and to focus in more detail on the so-called district schools with teaching in the Czech language, and these schools show primarily how targeted effort against assimilation brings its fruit. Currently two kindergartens, two elementary schools and six district schools in Croatia teach most of their subjects in Czech language. District schools are irreplaceable for the compatriotic community because, with the help of the Croatian government, they enable minority language lessons in small classes in settlements where the Czech ethnic group has survived to this day, even for two or three pupils.