The Gonzaga High School building consists of two parts, namely the main building and the library, each of which has two floors. In the main building, the second floor consists of rooms 1 to 15, and the ground floor consists of rooms 16 to 21. In 2011 the library building was renovated and reorganized so that there are two additional classrooms for learning. Because the moving class has been implemented, each room is used for specific lessons only. For the convenience and effectiveness of learning, each classroom is equipped with an air conditioner, a projector, a screen, and other facilities.