ENThe purpose of the article is to disclose the architectural development of primary school buildings in Lithuania during the 1920s and 1930s. Based on historical material the architecture of these buildings is analysed chronologically in several important aspects. First of all, the peculiarities of the construction of primary school buildings in the country are reviewed. Furthermore, the stylistic changes of such buildings and the factors that led to it are analysed. Lastly, attention is paid to the pursuit of functional convenience and its analysis, which also influenced the development of this type of building. This aims to reveal the essential aspects that determined the development of the architecture of primary school buildings in Lithuania at that time. Keywords: Architecture, interwar architecture, Lithuanian architecture, primary schools, school architecture. [From the publication]