Ya know how they say that teenagers need to sleep later in the mornings? (well, there was a study that said that). Our HS starts at 8:25, with first period. But, if you want a 7 period day, you need to start with "Zero" period that starts at 7:30. Kids who need to take a rigorous, pre-college load need the 7 periods, or if they're in any of the advanced music classes.
I think that's too early! (it also means that I have to be at work at 7:15!)