A first-grade teacher in Texas is donating her kidney to her 6-year-old student.

Doctors said there was only a 1-percent chance of finding a second kidney donor for Matthew Parker. The little boy’s kidneys started failing at three weeks old, and he has already undergone one transplant.

Matthew’s Hoffmann Lane Elementary teacher, Lindsey Painter, was among 80 people who got tested to see if they’d be able to donate a kidney. Painter ended up being an exact match, which Matthew’s mother Lisa Parker calls a miracle.

“So many people came forward trying to help him, and I’m the one who gets to do it,” Painter said. “I mean, I feel very lucky.”

Parker said there are no words to describe what Painter is doing for her son.

“It’s more than a thank-you,” she said.

The surgery is scheduled for next month in San Antonio. Matthew’s insurance will pay for Painter’s surgery, and her campus has stepped up to cover the income she’ll lose while recovering from the surgery.