Fire as an unwanted event due to its unpredictability develops without control, with the possibility of endangering human lives as well as causing great material damage. The factors influencing it cannot be summed up in a single framework that could be used to describe and understand the action Looking at public buildings, we talk about the challenges of fires in closed spaces. In such spaces, due to the formation of smoke with reduced oxygen flow, we are talking about dangers that lead to the formation of dangerous compounds, and thus to flames. Knowing the type of fire and its characteristics depends on which tactics and means of extinguishing will be applied. In such demanding intervention procedures, the rapid evacuation of all those present and the safety of the firefighters are important. Therefore, legal regulations, norms and regulations set requirements for the responsible person of the institution as well as the personal protective equipment of firefighters, which must be met by the same. In the experimental part, the work investigates and analyzes the complete tactics of extinguishing a real fire and a comparison of the tactical approach of a theoretical fire. It is based on the analysis of the actual event of the fire at the Mate Lovrak Elementary School in Zagreb from 2020 and the comparison and measurement of the time of the evacuation, rescue and fire extinguishing exercise at the "Braća Bobetko" Elementary School in Sisak in 2024. The aim of the paper is to explain and compare the used firefighting tactics through a critical analysis of real and theoretical firefighting action. From the results of measurements and comparison of real and theoretical action, it can be concluded that the demanding intervention tasks observed in this work were approached expertly, professionally, fulfilling the "Fire Protection Act" NN 92/10, 114/22, "Occupational Protection Act" "Official Gazette 71/14, 118/14, 154/14, 94/18, 96/18, and "Regulations on Standard Operating Procedures" Official Gazette 44/22. The paper proposes the possibilities of improvement that would increase the effect of fire interventions related to public buildings - elementary schools. In order to more effectively fulfill maintenance requirements, check the condition of equipment and devices that guarantee more successful emergency interventions in crisis situations, the need for employment of safety, occupational health and work environment experts was observed. It is addressed to founders of schools, and associations of occupational safety and health experts in seeking changes to legal regulations related to public educational institutions.