American Students Don't Learn Well When It's Hot Outside

A new study suggests hot weather makes it harder for high-school students to learn, a potentially growing concern in a warming world.

The good news, according to the analysis of roughly 10 million U.S. students who took the Preliminary SAT more than once between 1998 and 2012, is that air-conditioned classrooms appear to neutralize the mind-dulling effects of high temperatures.

https://blogs.wsj.com/economics/2018/06/07/american-students-dont-learn-well-when-its-hot-outside/