SAMHE (Schools’ Air Quality Monitoring for Health and Education) is a UK-wide citizen science initiative designed with and for schools to better understand indoor air quality in classrooms. Launched in 2022 by a consortium of UK research institutions and supported by the Department for Education and EPSRC, the project provided over 1,000 schools with air quality monitors and access to an interactive Web App. Through curriculum-linked experiments and activities, students explored real-time d...