Master Teaching

a blog for teachers who follow the Master Teacher

Zzzzzzzzzz

(While we continue to take a break, here’s LEAPAsia’s second WeChat post. We’re advocating for school children in China by posting articles on social media with advice for teachers and parents.)

Do the children/teenagers in your home or classroom get enough sleep?

In order to answer this question, we first need to answer three others.

How much sleep is enough sleep?

On the webpage for the U.S. National Institutes of Health,[1] a chart like this one summarizes the amount of sleep needed for different age groups. You may be surprised to learn that not only the children in your home/classroom but also you their parent or teacher are not getting enough sleep.

Age Recommended Hours of Sleep per Day
infants 16–18
preschool & kindergarten-aged children 11–12
primary school-aged children at least 10
teenagers 9–10
adults 7–8

What happens when children/teenagers don’t get enough sleep?

The UK National Health Service lists a number of problems that can result from a lack of sleep.[2] Children may more easily become obese because they eat sugary foods in order to help them stay awake during the day. Sleep is as important for children as exercise and a healthy diet. Children who regularly don’t get enough sleep may “seem irritable and overactive, seek constant stimulation and don’t concentrate well.” Imagine what an effect this can have on their school performance and behavior both at school and home. They may be more likely to act out. In fact, children who are sleep-deprived may appear to have ADHD (Attention Deficit Hyperactivity Disorder).

The U.S. National Sleep Foundation adds, “Poor or inadequate sleep can lead to mood swings, behavioral problems such as ADHD and cognitive problems that impact on their ability to learn in school.”[3]

What is a sleep debt?

When children/teenagers are sleep-deprived over a period of time, they develop what is called a sleep debt. Let’s calculate the sleep debt for school children in China. A senior high school student I know tells me that he goes to bed at 11:00pm and gets up at 6:00am.[4] According to the chart above, he’s losing at least:

  • 2 hours of sleep each night
  • 12 hours each week
  • 500 hours in a year
  • 1,500 hours in 3 years of senior high school
  • 3,000 hours in 6 years of junior and senior high school

Since for some children losing sleep begins in primary school, by the time teenagers graduate from high school, their total sleep debt may be well over 3,000 hours. Imagine the effects this sleep debt is having on their behavior, school performance, and overall health.

All this information about sleep and debts makes it sound like we need to change the old Chinese saying or at least make a new version of it:[5]

活到老睡到老

So let’s return to our original question: Do the children/teenagers in your home or classroom get enough sleep? Do you? And more importantly, if your answer is “no,” what are you going to do about it?


[1]How Much Sleep is Enough?,” nhlbi.nih.gov, last modified February 22, 2012.
[2]How Much Sleep do Kids Need?,” nhs.uk, last modified March 30, 2015.
[3]Children and Sleep,” sleepfoundation.org, accessed March 1, 2016.
[4] This schedule is set up by the school (where the student boards). Mandatory evening study hours (in the classroom) end at 10:00; lights out at 11:00. Then, students are actually out of bed by 5:30am. Children who live at home follow a similar schedule.
[5] We’re playing with words in Chinese. The original saying talks about life-long learning: 活到老学到老, As long as you live, keep learning. We’re suggesting a value for life-long sleeping: As long as you live, keep sleeping. The words for learn and sleep sound somewhat similar.

Further exploration

  • If you’d like to read the Chinese version of this post, you can find it here:
    Zzzzzzzzzz.WeChat QR Code
  • If you or a friend would like to join our WeChat page, you can scan the QR code.

What’s your perspective?

  • Of course, we welcome comments on the ideas in this post.
  • We also welcome you to join us in advocating (before the throne) for school children in China.

Post Author

Melissa K. Smith

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This entry was posted on March 9, 2016 by in LEAPAsia on WeChat, Melissa K. Smith, rest.

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