It was operated by the Roman Catholic parish of Saints Philip and James Church in Phillipsburg.

Twenty-one acres of land on Roseberry Street were purchased and after an ambitious campaign drive led by Reverend Joseph V. Kozak, the new high school was dedicated on August 20, 1961, as Phillipsburg Catholic High School.

The Diocese arranged for the services of another order, the Sister Servants of the Most Sacred Heart of Jesus.

In 1994 the high school was closed, citing low enrollment and fiscal expenses.

The baseball team won the Non-Public Group C state championship in 1975, defeating St. Peter the Apostle High School in the tournament final.