It was originally founded as Bay Street Christian Day School in 1976.

[2] The historian Joseph Crespino has noted that, unlike many other private schools in Mississippi, PCS was established after school desegregation began and enrolled minority students within a few years of its founding.

[3] Crespino's theory has been questioned, in light of the school's enrollment patterns compared to the general (at the time) enrollment patterns of white Southern families in private schools following desegregation.

[5] This was due to the long driving distances to some of the other MAIS Class 6A schools such as Jackson Prep and Hartfield Academy.

After the MHSAA released the enrollment figures for 2025-27, PCS was classified as a MHSAA Class 3A School and was assigned to Region 8-3A with the other schools in the region being Tylertown High School, St. Patrick Catholic High School (Biloxi, Mississippi), Saint Stanislaus College in Bay St. Louis, and West Marion High School for most sports.