Students who learn in hotter classrooms perform worse on college-admissions tests,.
Researchers tracked 10 million high school students who took the PSAT multiple years between 2001 and 2014. On average, students improved their score by a third of a standard deviation by retaking the test. But a student’s performance dropped by nearly 1 percent of a year’s worth of learning for every degree Fahrenheit hotter the outside temperature was during the school year before a student took the test. The effect was three times as strong for low-income, black, and Hispanic students. In schools with air conditioning, 75 percent of the declines associated with hot days disappeared.
A version of this article appeared in the June 13, 2018 edition of Education Week as School Facilities