A sleep chart posted by an elementary school teacher has been making the rounds on Facebook. 

While the chart has been the subject of some criticism because of the regimented times, the varying bedtimes based on ages can be beneficial. The National Sleep Foundation posted their own sleep chart showing toddlers (ages 1 to 2) should get 11 to 14 hours of sleep per day, preschoolers (ages 3 to 5) should get 10 to 13 hours per night, while school-aged children (ages 6 to 13) should get 9 to 11 hours.

The National Sleep Foundation’s chart also provides a range of what still could be considered an appropriate amount of sleep time, and stipulates how much sleep is too little and how much is too much, depending on the child’s age. For example, it’s recommended that kids aged 3 to 5 get 10 to 13 hours of sleep per night, but that the age group should not get less than 8 hours or more than 14.

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