Carskadon study on starting times for schools concluded that early school starting times

Early school starting times cause poor performance on tests, inattention in class, and drowsiness.

Explanation:

Carskadon study on early school starting time showed that it cause increased rate of rapid eye movement sleep in students and they doze off during lecture. Insufficient sleep lessens attentiveness levels in the class which affects students' potential to learn. The study showed that students do not perform well on tests. In addition to the difficulty in learning, there is an increased danger of accidents for those who drive to school due to dizziness.

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