Keystone School

Keystone School is a co-educational private school for students from pre-kindergarten to twelfth grade, located in midtown San Antonio, Texas, United States.

The greater Keystone School consists of the Little School of Keystone, serving PK-3 and PK-4 students, Lower School, serving kindergarten through fourth-grade students, the Middle School, serving fifth- through eighth-grade students, and the Upper School, consisting of the ninth through twelfth grades. Keystone is regarded as one of the most academically competitive schools in the United States and has been acclaimed for its academic performance. It has been placed as one of the best private high schools in America by the Washington Post multiple times and ranked #1 in 2015.