Next month, the Huntsville School District in Arkansas will join the wave of public schools switching to a four-day week.
The shorter school week, which first emerged in a few rural areas decades ago, is now expanding into suburbs and smaller cities. At least 2,100 schools in half the states have embraced the three-day weekend mostly as an incentive to hire and keep teachers, prompting cheers of support from instructors, unions, and many families.
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