Highlights
•Monitoring temperature across ∼3600 classrooms in a school district helped identify cooling needs and prioritize investments.
•Central and window AC classrooms maintained comfortable temperatures compared to no AC, with central AC being most effective.
•Temperature variability between classrooms in the same building was 2.3°C on average, with a maximum difference of 14.4°C.
•Classrooms at ground levels were up to 6°C cooler than those in upper levels in school buildings without mechanical cooling.
•Novel temperature metrics captured frequency, duration and intensity nuances of heat exposure, complementing central tendency values.
See entire study in Indoor Environments, Volume 2, Issue 3, here