On March 23 within the Civil Protection Days a demonstration classes for students, teachers and staff of secondary schools of Shevchenko District took place at Lviv School # 23. Representatives of Lviv State University of Life Safety held studies conducted on fire extinguishers, their classification, structure and features. Cadets demonstrated extinguishers in work on the model fire. In addition, the pupils were able to check the effectiveness of modern RPE, which are in service in SES of Ukraine. After all a training evacuation from the school building was performed.