With research proving teens have different sleep rhythms, why can't all high schools start school later?
A new study of a few thousand students found that homeschoolers get more sleep than students at traditional public and private schools. What are the consequences?
Research bears out what teenagers complain about all the time: They can't fall asleep before 11 p.m. Early school start times beg the question about how much tired kids are actually learning. Cognitive scientist Daniel Willingham answers.