High school students' emotions study

When researchers  asked more than 21,678 U.S. high school students to say how they typically felt at school, nearly 75 percent of their answers were negative. "Tired" topped the list, followed by "bored" and "stressed," with positive words like "happy" distantly following.Students reported feeling boredom and stressed, but in the moment they reported feeling calm, happy, and relaxed even more often. What didn't change was the one "feeling" the researchers hadn't expected at all: Students overwhelmingly reported feeling tired. It was the only feeling consistently named by more than half of the students. The study also found that boys and girls tended to experience school differently. Girls reported more negative feelings than boys overall, and in the moment, girls were much more likely to say they were stressed. As of 2016 the National Sleep Foundation found that 87 percent of high school students in the United States sleep significantly less than the recommended 8 to 10 hours per night. And on the heels of the Yale study, another in the journal Molecular Psychiatry also found that even preteen students who got insufficient sleep had higher rates of anxiety, depression, impulsive behavior, and poor cognitive performance. 
Moeller, J. et al.  (2020).  High school students' feelings. Learning & Instruction, 66 (April).
https://doi.org/10.1016/j.learninstruc.2019.101301