The school shares the oldest continuous high school football rivalry with the William Penn Charter School.
The academy recently completed the first two phases of a campus rebuilding plan.
The Union School was founded on the evening of December 6, 1759, at the Green Tree Tavern on Germantown Avenue.
The school was founded by prominent members of the Germantown community who wished to provide a country school for their children.
In 1761, land was given to the school by trustee Charles Bensell, and a schoolhouse with its iconic belfry was constructed.
The school found itself in the crossroads of early American history.
As some of the founders and residents of Germantown were of German descent, it was decided that the school be opened with both English and German speaking departments.The founders chose David James Dove to head the English department and Hilarius Becker of Bernheim, Germany, to head the German school.