Grass Lake voters to decide on school operating millage in May 4 election Updated Apr 28, 2021; Facebook Share GRASS LAKE, MI – Grass Lake voters will head to the polls Tuesday to vote on a tax that many of its residents likely won’t pay. Grass Lake Community Schools voters are being asked on May 4 to approve 5 mills for 13 years, beginning in 2021, to make the district’s 18-mill non-homestead property tax whole. This tax applies to businesses, industrial property and non-qualified agricultural property. It does not apply to primary residences. The district is asking for this tax because its maximum operating millage rate was reduced to 17.6786 mills when its tax base grew by more than the rate of inflation. The state’s Headlee Amendment requires a millage rate to automatically be reduced so it doesn’t outpace inflation in the area.