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Re:Schools Are Slow to Learn That Sleep Deprivation Hits Tee... by chongli on Saturday April 02, 2016 @09:13AM (#11411386)
but people who are babysitters

You hit the nail on the head with this one. High school hours are specifically set to end earlier than elementary and middle school hours. This is so that high schoolers can pick up their younger siblings and walk them home while parents are still at work.

Re:Schools Are Slow to Learn That Sleep Deprivation Hits Tee... by greedo on Saturday April 02, 2016 @10:51AM (#11411721)
Not the case in my school district. Our elementary schools get out before the high schools, and both middle and HS end at the same time.