Ferndale Public Schools spokeswoman Shelley Rose said the 2,190-student district didn't realize the clause was in the lengthy document until the Mackinac Center contacted it Monday.
Rose said the language apparently made it into an earlier contract in the 1970s for reasons she can't explain. She said the district and the Ferndale Education Association will strike the unenforced clause from their contract that was ratified March 5.
State Rep. Tim Kelly, R-Saginaw Township, has asked the state Board of Education to investigate. Kelly said he's glad the language is being purged, but he thinks it's disturbing that it was put there in the first place.