DekuNut
I play my drum for you
Late. I have a hard time getting up in the mornings, so later would make me more productive.
Early start, early finish definitely.
When you're in work, days when you start at 12PM feel exactly the same as days when you start earlier at like 7AM or 8AM. Maybe it's because you still have that feeling that you have to get up off your ass and do something. When I'm in late, all I'm doing with my time anyway is just sitting around waiting to go in, so I'd rather go in early and have the rest of the day.
Of course, specific to this thread, what I said above also applies to school.