 Since the convent school was small and only temporary , the next order of business was to build the actual school . The parochial school took ten years to build ( 1950 – 1960 ) . This building also consists of three floors and is covered with red sandstone in the front . The rear of the building is made of white Pennsylvania sandstone . There is a bell tower on the building . It has three heavy , bronze bells that were salvaged from three Protestant churches of Pittsburgh . 
