I found this article this afternoon and it supports a lot of what we talk about in terms of the amount of sleep adolescents need each evening. It is CRUCIAL that adolescents get 7 to 8 hours of sleep each night in order to stay healthy, but also to retain and embed learning. The study referenced in the article below discusses the power of sleep to move information from the short-term memory home of the hippocampus to the long term memory home of the neocortex. Just another reason to get the kids into bed early, remove all digital distraction from their rooms, and make sure they are actually sleeping.
Sleeping to Remember—And Forget - Dana Foundation