Schools want to improve student performance, 1
they may be stopping them from learning.
Teenagers need 8.25 to 9.5 hours of sleep per night. 2
, most are not getting that much.
3
However
students study hard, they are too tired to learn effectively.
Teenagers may go to bed early,4
they have problems falling asleep.
Teenagers should naturally wake up after 8. 5
, schools start earlier than that.
Unfortunately, 6
the evidence for starting lessons later is strong, many schools will not do it.