This is a no-brainer.
Besides, think of the energy saved, it's lighter out.
Letting teens sleep in would save the country roughly $9 billion a year
By Christopher Ingraham September 1 at 11:57 AM
The United States would realize roughly $9 billion a year in economic gains by instituting a simple, nationwide policy change: starting public school classes no earlier than 8:30 a.m.
That's according to an exhaustive new study by the Rand Corporation, the first of its kind to model the nationwide costs and benefits of later school start times.
The economic benefits would come primarily from two sources: greater academic performance (and hence, lifetime earnings) among more well-rested students, and reduced rates of car crashes among sleepy adolescent drivers.
more:
http://www.washingtonpost.com/news/wonk/wp/2017/09/01/letting-teens-sleep-in-would-save-the-country-roughly-9-billion-a-year/?utm_term=.e068c6934682
DO SOMETHING!