2024 No A study evaluating noise levels at selected schools in the Czech Republic https://pubmed.ncbi.nlm.nih.gov/30660144/ Nedojedla, Petra Europe Observational Exposure Students Elementary (K-5) Noise Equivalent sound pressure level Primary schools Noise Teacher Lessons A-weighted noise levels were measured in 12 primary school classes across subjects. Average LAeq,T was 68 dB, with highest levels in physical education and arts. Findings highlight pupil noise as a major source and call for mitigation in classrooms. 2018