The researchers asked students whether they experienced physical symptoms of stress, such as headaches, exhaustion, sleep deprivation, weight loss, and stomach problems.
More than 80 percent of students reported having at least one stress-related symptom in the past month, and 44 percent said they had experienced three or more symptoms.
They also faced pressure to take college-level classes and excel in activities outside of school.
Many students felt they were being asked to work as hard as adults, and noted that their workload seemed inappropriate for their development level.
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