New York Mets owner Steve Cohen and his wife went to bat for Big Apple public school teachers, pledging $1.3 million to them after The Post revealed how reliant instructors are on donations for basic classroom supplies.

The Aug. 30 story — which revealed that nearly 3,000 teachers were forced to go hat-in-hand to raise money for their classrooms on the online fundraising platform DonorsChoose this year — inspired the Steven & Alexandra Cohen Foundation to act swiftly, according to Juan Brizuela, a DonorsChoose spokesperson.

“Alex Cohen moved the Cohen Foundation to immediately make a donation to educators” following the story, Brizuela told The Post, referring to the hedge fund billionaire’s wife, who heads the philanthropic organization. 3

The foundation’s seven-figure gift “ful

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