Heat and Learning
研究发现高温天气会抑制学生学习效果，而学校空调能缓解这一影响；极端高温对少数族裔学生影响更大，解释了约5%的种族成绩差距。
We demonstrate that heat inhibits learning and that school air conditioning may mitigate this effect. Student fixed effects models using students who retook the PSATs show that hotter school days in the years before the test was taken reduce scores, with extreme heat being particularly damaging. Weekend and summer temperatures have little impact, suggesting heat directly disrupts learning time. New nationwide, school-level measures of air conditioning penetration suggest patterns consistent with such infrastructure largely offsetting heat’s effects. Without air conditioning, a 1°F hotter school year reduces that year’s learning by 1 percent. Hot school days disproportionately impact minority students, accounting for roughly 5 percent of the racial achievement gap.