2024 Yes School Indoor Air Quality and Health Risk on the Junior High Schools Students in Depok, Indonesia http://psasir.upm.edu.my/id/eprint/76439/1/2019121207382616_MJMHS_0413.pdf Pakpahan, Sasnila Asia Exposure Observational Epidemiological Students Middle/Jr High (6-8) Particulate Matter (PM) Carbon Dioxide (CO2) Volatile Organic Compounds (VOCs) PM2.5 PM10 carbon dioxide Formaldehyde School health Air quality (PM₂.₅, PM₁₀, CO₂, HCHO) was assessed in 3 Indonesian junior high schools; PM exceeded safe levels, posing health risks. Policy implications include improved school air quality monitoring. 2019