It's funny, we always get asked by family why our kids go back so late! When we moved out here to NJ, my co-workers in the public schools explained to me that Labor Day weekend is such a popular time to spend the last hurrah of the summer at the Shore that it wouldn't be practical for the schools to start back before Labor Day. I guess it makes sense as most schools in the country, as far as I know, typically start late Aug and end early June. So it appears it's really just a Jersey thing. We vacationed in Cape Cod in late Aug. a few yrs ago and they had already started back. 2 days off for a Teacher's Convention is also just a Jersey thing, hence the reason they refer to that week as "Jersey Week" in WDW!