The St. Joseph's Theatre, which underwent complete renovation in 2004, was renamed in honor of one of the La Salle Green Hill's pillar, Br. Rafael S. Donato FSC. Once a single storey auditorium, it is now fully air-conditioned and has an orchestra and balcony sections which can accommodate 628 persons. It is the home theater of both the grade school and high school departments of La Salle Green Hills.
TSG Asia worked together with an acoustic specialist to ensure that the proper sound system and acoustic criteria are met.