Seneca Valley High School in Germantown remains the largest public high school in Maryland by square footage. Later in this article, we’ll take a look at some of the other Maryland high schools that come closest to Seneca Valley in size.
Located at 19401 Crystal Rock Dr., the current Seneca Valley building opened in 2021 and encompasses approximately 440,000 to 452,000 square feet, depending on the source and measurement used. While there is no comprehensive statewide database ranking Maryland high schools by total building square footage, our research continues to indicate that Seneca Valley is the largest public high school facility in the state.
The school originally opened in 1974 on property that once belonged to legendary baseball pitcher Walter Johnson, who purchased the land in 1935 and lived there with his family until his death in 1946. Before Northwest High School opened in 1998, Seneca Valley was Germantown’s only high school…