Among these indicators, only three - natural daylight in classrooms, quality of cleaning and its frequency, and separation of classrooms for primary school students - met the requirements. The other indicators - floor space per child, suitability of desks and chairs to a child's age and body, classroom microclimate, and indoor air quality - did not comply with the standards. For 38.8 per cent of all schools, the floor space per student is 2.8 times smaller than the required standard of 1.5 m2 per child, while for 22.2 per cent of the assessed schools the number of students per classroom exceeded the maximum allowed level. These items were too small or too narrow for the child’s age and body.