This guy says most kids have sleep problems that look like adhd
kid require 10 to 12 hours sleep a night
even in high school
Without exception, they worked out a pattern for themselves. Often, it was a short nap. This held for all age levels.
Without a doubt, this is one of the major benefits of homeschooling. Kids can sleep in or take naps as needed.
Many children are deeply sleep deprived and are basically being given speed to deal with it.