Now that the schools have broken the Labor Day threshold on getting your kids back, they will continue to move the start of the school year up 1 week every year until they have them year round. Which sadly, is what most parents want. It’s much easier that way. Childhood summers are gone, a thing of the past, replaced by perpetual school related “camps”.
Yes, of course big government types want year-around school. But right now the advantage of being in the teaching racket is you get lots of time off in the summer (not as much as the children due to teacher in-service training but still 5-7 weeks in most systems). What other job offers at least two weeks off at Christmas and a bunch of weeks in the summer and still has a good year-around benefits package? The teachers will cry foul if summers get shorter.
Michigan does not start until after Labor Day, although some schools get waivers.
Our tourist season is the reason.