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Keystone School

Welcome to Keystone School

Keystone School has been a haven for San Antonio's bright and motivated children since 1948. Our diverse community of engaged learners in grades PK3-12 enjoys small classes, master teachers, and interdisciplinary instruction at our warm and historic campuses. Keystone's scholars prepare for adulthood in a safe and inclusive environment, and consistently lead the nation in measures of academic excellence.

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In the News

Keystone is proud of our upper school quiz bowl teams! All five groups made it into the playoffs recently in the McArthur competition. 

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