Ann Arbor Public Schools will close on May 3, an election day.
Many schools are polling places, and Superintendent Jeanice Swift says there are concerns about people coming into unlocked buildings to vote.
Swift says Ann Arbor is not alone in grappling with the issue.
"It is on the minds of districts across the state and around the country, " she says.
Swift says some districts have elected to use election days as professional development days, and Ann Arbor may do the same, or the city may decide to find other places for people to vote.