"Since the ban on a pre-Labor Day start went into effect in 2006 in Michigan, hundreds of districts have
applied for waivers from the Michigan Department of Education to get permission to start school earlier.
At least 178 school districts are using approved waivers to start school before Labor Day, according to the Michigan Department of Education. Another 28 are awaiting approval.
...
Many districts say they need the earlier start to align their calendars with dual-enrollment programs that allow high school students to take college courses.
Districts are also granted waivers because they meet exemptions built into the law, which include increased instructional time as part of a reform plan as well as balancing a school calendar for year-round schooling."
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