A new study published in Environmental Monitoring and Assessment examined the exposure of school children to formaldehydewith respect to classroom indoor environment characteristics and respiratory and allergic symptoms. This study utilized reports of a questionnaire survey conducted in Romania, using the data collected in the SINPHONIE (Schools Indoor Pollution and Health: Observatory Network in Europe) project.The study entailed measurements of formaldehyde and microclimate parameters in three classrooms per school, in five schools, along with one outdoor measurement at each school. Questionnaires were used to collect information on classroom characteristics and health effects among children. The results disclosed that indoor formaldehyde levels for a school week varied between 15.5 and 66.2 μg/m3, with a median value of 34.8 μg/m3. The adjusted odds ratios for allergy-like, asthma-like and flu-like symptoms were 3.23, 2.69 and 2.39, respectively, when exposed to higher formaldehyde levels (≥ 35 μg/m3) during a school weekcompared to lower formaldehyde level exposures. In addition, higher levels of indoor formaldehyde were significantly associated with health symptoms in children. It was also found that high indoor formaldehyde levels were related to the use of water-resistant paint for ceiling coverings, moisture damage signs and lower classroom natural ventilation rates.