A.D.
It used to be staggered until about two years ago. Then the state of Texas education board had the "brilliant" idea of standardizing the calendar. The ENTIRE state is now off the same week. They did the calendar thing in part to keep districts from the crazy practice of starting at the beginning of August. Keller ISD used to have two weeks off because there were so many parents that worked for the airlines they started pulling their kids out before spring break started so they could get a jump on standby flights. That changed as the industry changed and the district got huge. But you're right it makes things insane around here. The zoos aren't even fun.