Mayor de Blasio on Tuesday announced a deal to settle a 2010 lawsuit by school safety agents who claimed they were underpaid because they’re women.

Under the terms of the preliminary deal, the city will pay $38 million in retroactive pay for thousands of current and former school guards. Seventy percent are women.

Their pay tops out at $35,000, compared with $42,000 for mostly male special officers who guard hospitals or homeless shelters.

“The previous policy was wrong — it had to be fixed,” de Blasio said.

Officials said they’re removing the pay-equity gap by providing raises to current school safety agents over the next several years that would cost an additional $47 million.