i think shifting the school hours to later will not solve the
key issue here : insufficient sleep of the students. if school
starts late, it ends late too.
if students are not having enough sleep now becos of too much
homework and projects, shifting the school works make no sense, the
probable solution is to lessen the workload. on the other hand, if
students are deprived of sleep becos they are too playful, shifting
the school hours to a later time will make them more playful becos
there are more temptation at nite like midnite movies, pubs
etc