Looks like the story originated here:
Calcea Johnson and Ne'Kiya Jackson presented their new findings on the Pythagorean theorem to the American Mathematical Society last week.
www.insider.com
They issued a correction:
The method they used for the proof is slightly different than established ones, but that is not news since there are numerous ways to prove theorems. And this is not a novel approach:
It doesn't appear to be their fault though that idiotic journos misrepresented the story and blew it up. They're only high school kids and it's great that they're engaged in math research.