Raising Kids Big Kids Sleep How much sleep does an eight-year-old need? By Parents Editors Published on July 2, 2015 Share Tweet Pin Email Q: How much sleep does an eight-year-old need? A: The majority of 8-year-olds need 10-11 hours of sleep. Figure out what time your child needs to get up in the morning for school and count backwards from there. Research shows that children this age who go to bed before 9:00 PM get more sleep and sleep better at night. Answered by Dr. Jodi Mindell Was this page helpful? Thanks for your feedback! Tell us why! Other Submit