Do school days start too early?

[dead0man]

yes....and here comes a big but

but teenagers would just stay up later and still will be tired for the first few hours of school so we'd just be pushing it back to noon in a few decades.

[dead0man]

Transition from public to charter schools have made school days start earlier

It looks like you're saying the rise of charter schools has caused all school days to start earlier.  That seems far fetched.  Did I misunderstand you?  If not, cite?