To the Editor:
Mr. & Mrs. Sementini are not the first people to suggest that parents “set a bedtime for them and enforce it, leaving all electronic devices on the kitchen table till breakfast” (letter on 2/23). At first glance, this really sounds like a simple solution to the problem of teen sleep deprivation. However, this epidemic is not just about poor sleep habits and over-scheduling. It is about human biology and a school schedule designed for adults and not children.