Responding to the post baby boom in the 1960s, the Archdiocese was engaged in planning for the construction of additional high schools in the city and the suburbs. This was a costly project that would require more financial support than was available through the traditional parish subsidies. In 1969, school tuition was introduced for the first time. Over time, annual increases in tuition would inevitably result in the loss of students. This had an impact on smaller schools such as St. Thomas More, resulting in its closure in 1978, and the transfer of its students to West Catholic High School for Boys which helped to bolster declining enrollment at that facility.
In 1984, West Catholic High School for Boys was recognized by the Council of American Private Education as an exemplary high school, one of 60 celebrated in the United States. Nevertheless, the cost of maintaining large facilities with declining enrollment in the same neighborhood was becoming more problematic. Consequently, in 1989, Cardinal Anthony Bevilacqua announced the merger of boys and girls into a single co-educational program located at 45th and Chestnut streets. It would be known as West Philadelphia Catholic High School. It was also decided at that time that the school move to a President-Principal paradigm of administration, with a Brother serving as President and a Sister as Principal. Likewise, a Development Office was also created to seek additional sources of funding beyond tuition, fees, and traditional fundraising methods.