5/5 Bottom line: extreme heat is undermining teacher productivity and reshaping learning in ways we’ve missed. As heat waves become more common, schools with older workers or weak cooling systems will be esp. vulnerable. Climate change is already affecting American teachers.
4/5 One reason why: teacher absences. Older teachers are nearly twice as likely to miss work during very hot months. At the same time, older teachers usually raise achievement because of experience, but that advantage evaporates as extreme heat increases.