St. Mary's Academy is a private Catholic K-12 school in New Orleans, Louisiana run by the Sisters of the Holy Family.

The academy has a long tradition as a private Catholic college preparatory co-educational elementary and a middle/high school for young women.

The school has undergone two moves in its history, having started closer to the heart of the city (in the French Quarter).

[3] In 2023, students Calcea Johnson and Ne'Kiya Jackson each independently created new proofs for the Pythagorean theorem using trigonometry.

The students were featured on multiple news outlets including 60 Minutes,[6] and their proofs were subsequently published in The American Mathematical Monthly.