The school was founded in 1955 by parents who believed "responsibility for the educational instruction of their children according to Scripture was theirs, not the states".

[2] The school was located in as many as five different rented locations around the greater Harrisburg area between 1955 and 1965 before building its own elementary school building on its current location at 2000 Blue Mountain Parkway in Harrisburg, Pennsylvania[1] Over the next fifty years additions to the original building, the construction of an Arts and Athletics Center, the Knight Cafe, and improvements to the school grounds have created a beautiful and safe school campus.

Situated on Blue Mountain one mile from downtown Linglestown, Harrisburg Christian School resides on 38 acres of fields, woods, and wetlands.

Approximately eleven acres of the campus have been developed as athletic fields.

HCS employs 36 full and part-time teachers with a total employee base of 60.