J. P. McCaskey High School is a public high school located in Lancaster, Pennsylvania, United States. Located on the east side of Lancaster, it is named after John Piersol McCaskey, a local educator. The McCaskey campus consists of two buildings: J.P. McCaskey, which is usually referred to either as "JPM" or simply "JP"; and McCaskey East, which is referred to as "East". Also on the McCaskey campus are a number of playing fields, tennis courts, and a stadium.