Several school districts in Los Angeles County have already adopted this calendar. Some, such as the William S. Hart Union High School District in Valencia, have used this calendar for years with good results. Also, I have found that many providers of summer camps and other educational activities have moved, or are anticipating moving, the dates of their programs, as more of their client base demands offerings that are completed by mid-August.
This year, the board approved starting school on the Thursday prior to Labor Day. As Crosby correctly surmised, this served, in part, as a test to see how the parent community responded to starting before Labor Day. There was concern that the district would experience a high absentee level the Thursday and Friday before Labor Day. As it turned out, the district had around 300 students absent those days, just about the same as had been experienced at the beginning of school previously.