NYC mayoral candidates likely violated long-standing rules forbidding the use of school visits for political purposes to participate in an endorsement “stunt” by the powerful teachers’ union, The Post ...

New York City’s powerful teachers union announced Friday it won’t endorse in the Democratic mayoral primary, citing no clear consensus among United Federation of Teachers members this election cycle.

“We helped elect Mulgrew, and now we feel like Mulgrew sort of stabbed us in the back,” said Moshe Spern, the leader of United Jewish Teachers. Moshe Spern thought Michael Mulgrew would listen to him.