Failing the New York State teachers’ exam really paid off — especially for a Queens man who learned this month he’s getting a $2 million windfall over it.

Roughly 5,200 black and Hispanic ex-Big Apple teachers and once-aspiring educators are expected to collect more than $1.8 billion in judgments after the city stopped fighting a nearly three-decade federal discrimination lawsuit that found a certification exam was biased.

It’s the largest legal payout in city history.

As of Friday, 225 people who failed the Liberal Arts and Sciences Test used for teacher licensing from 1994 to 2014 had already been notified they’re getting settlements of at least $1 million, according to an analysis of Manhattan federal court records.

Court rulings found the exam violated civil-rights laws, allowing far more white candidates to pass.

The case is expected to generate hundreds of other future million-dollar awards.

Herman Grim, 64, of Queens, on July 5 was awarded the biggest judgment to date — a jaw-dropping $2,055,383.

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