Ghostwheel
Pyrrhonist
In our state, if the family goes away for more than 5 days, the students can get what is called a "contract" and the teachers give the kids a list of items to accomplish while they are away. This worked out quite well the times we had the opportunity to visit Washington DC, Yellowstone and Hawaii (the Big Island) while the volcano was erupting. We could never have afforded those trips during vacation times when the costs are two to three times as much. Those three excursions were worth far more than whatever they would have missed in school. As long as the contract was returned with the work done, the kids got credit, the school got it's money and everyone was happy (especially my son's class that got daily youtube reports from the volcano.I have heard of strict attendance policies in my state, but I don't believe many districts enforce them unless they have other reasons for doing so, like if a child seems neglected or a parent is always threatening to sue.
That said, we always planned our vacations during school breaks because my kids found it hard to miss a full week of school. In about 3 weeks, school schedules will no longer be a factor in when we go away. That time flew by, and I'm glad that 3 days was the longest that my kids ever missed school for something other than illness or injury.