In which building was the St. Francis Xavier grammar school program initiated?

The St. Francis Xavier grammar school program was initiated in the Brophy Prep Building. This choice reflects the historical context and established purpose of the building at the time the program was launched. The Brophy Prep Building has served as a significant educational facility, underscoring its pivotal role in hosting various academic programs.

In contrast, the other buildings mentioned have different primary functions and are known for other aspects of the institution’s activities. Regis Hall, Fitzgerald Hall, and the Main Building are linked to various events and programs, but the initiation of the St. Francis Xavier grammar school program specifically ties back to the Brophy Prep Building, highlighting its pivotal place in that aspect of the school's history.