Upper Darby High School is a four‑year public high school in Upper Darby Township, Pennsylvania. It is part of the Upper Darby School District.

It is the oldest high school in Delaware County, established in 1895. It is one of the largest schools in Pennsylvania.

Address: 601 North Lansdowne Avenue, Drexel Hill, PA 19026

Phone: (610) 622-7000

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