[Ntrails]

> why schools start so early

Because they need to fit in around the schedules of working parents. I'm loathe to accept that this is a source of problems given the likely issue is actually the time students go to sleep, how long they sleep for, and what time they wake up.

The solution does not obviously need to be changing school start times rather than student behaviour

(seriously though, I'd love to hear the counter, as there probably is one)

[KevanM]

I've just started reading this, but the counter is that at the age the students are their bodies start to produce chemicals that mean their sleep pattern tends towards late nights (evolutionary advantageous as young fitter ones of the tribe are active at the most dangerous time of day) and consequently are sleepier if forced to wake at a time where their body is still chemically calling for sleep.