Researchers tested the amount of homework a kid should do every night and it turns out it's not that much at all. They found kids should work solid for about 60 minutes straight, that way they do the best work and get the most out of what they're actually learning.

Once they go over that time, it actually does more harm than good.  At over 90 minutes, the kids lose focus and don't retain what they're just studied and actually perform worse on tests.

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