Never been that way around here, not ever. It's always the first to second week of June.... even if no snow days are taken. Also, we always went back the day after Labor Day, but now they start around the last week of August. When do your brats go back ??
Ya know, who cares ?? No matter what school they go to and the length of time they spend in the classroom, they still aren't learning jack, let alone coming out worthwhile. I say, let 'em go year round until they're about 25. Heck, they already know everything by 15, so let 'em sit in there and stew.