Children who go to bed at the same time every night do better academically

Telegraph (UK) 07 Jun 2010

Researchers found that children who had a regular bedtime performed better at languages, reading and maths than those who went to bed at different times. Scientists at SRI International, an independent American research institute based in California, found the earlier a child went to bed, the better they performed at school.

The study of 8000 children who were aged four concluded those who had less than the recommended 11 hours of sleep each night fell behind in their studies. ..Parents, she added, should also interact with their child at bedtime using routines such as reading books or telling stories.
http://www.telegraph.co.uk/health/children_shealth/7807049/Children-with-regular-sleep-patterns-smarter-at-school.html