It is located in Sewanee, Tennessee on the Cumberland Plateau between Nashville and Chattanooga and adjacent to the University of the South, which is also affiliated with the Episcopal Church.

In addition to outstanding college preparation, the school is known for its close and welcoming community, emphasis on creativity, and opportunities for outdoor adventure.

[1] The University of the South agreed to merge the Sewanee Academy with St. Andrew's School in 1981.

[2] St. Andrew's School was founded in 1905 by the Episcopal Order of the Holy Cross (Anglican monastics) with the goal of "breaking the cycle of poverty" for "mountain boys."

After St. Mary's closed, Sewanee Military Academy and St. Andrew's School, which had enrolled only boys, both became coeducational.