Upper Darby High School

Upper Darby High School
Location
601 North Lansdowne Avenue, Drexel Hill, Upper Darby, Pennsylvania, U.S.
Information
Type	Public high school
Motto	Where Every One Is Royalty
Established	1895
Principal	Craig L. Parkinson[1]
Faculty	233.23 FTE[2]
Enrollment	4,388 (2023-24)[2]
Student to teacher ratio	16.49[2]
Color(s)	Purple & Gold
Nickname	Royals
Newspaper	The Acorn
Yearbook	The Oak
Information	610-622-7000
Website	www.upperdarbysd.org/udhs

Upper Darby High School (UDHS) is a four-year public high school located in Upper Darby Township in Delaware County, Pennsylvania. It is part of the Upper Darby School District. Established in 1895, it is the oldest high school in Delaware County.

As of the 2023-2024 school year, the school had an enrollment of 4,388 students and 233.23 classroom teachers (on an FTE basis), for a student-teacher ratio of 16.49.^[2]

The population is diverse, with over 55 nationalities of students. It has a long-established football rivalry with Monsignor Bonner High School, located less than a block away. Upper Darby High School was a part of the inspiration for Upper Darby alumna Tina Fey's movie comedy Mean Girls. The mascot of Upper Darby High is the Royal, which is portrayed as a lion. In previous years, it was a court jester. The school emblem is the royal oak tree, the yearbook is named the Oak, and the newspaper is called the Acorn. An Acorn award is rewarded every year at the UDAEF Sweet Night Out Foundation Ball in February.

Upper Darby Senior High School is one of the largest high schools in Pennsylvania by enrollment. The High School is also home to the Upper Darby Performing Arts Center, and the Summer Stage program.