The Long Island teacher and mom of four killed when her SUV plunged into a backyard pool appears to have suffered a medical episode before the fatal crash, sources close to the investigation told The Post on Sunday.

Allison Rahmani, 40, died Friday when she lost control of her vehicle and drove it into the swimming pool at her family’s Hewlett home.

Police said Rahmani was able to call 911 from the vehicle but could not be saved and died on the way to the hospital.

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