If not this might. If school started later that means you have to come home later and kids already complain about how late they get home. When you get home late, you don't have time to do after school activities,finish homework and even eat dinner. When kids get home early that can fit all of those things and vein have extra free time to do whatever you want.
In an article I read by Justin O'Neill (pg.21) he said, "it could also cut your family dinner time",and he is correct. It can also give you stress if kids don't get things that are important