When World War II wrought havoc on St. Theresa's College of San Marcelino, Manila, leaving it in ruins, little hope was left for the rebuilding of its physical plant. Therefore, steps were taken to look for a new site, a property that would be larger than the San Marcelino Compound. In January 1946, a contract was signed for the purchase of a property consisting of five (5) blocks in Sta. Mesa Heights, Quezon City. The U.S. Army, which previously occupied the place, left a rudimentary make-shift building, later to be used temporarily as classrooms of St. Theresa's College, Quezon City, and as quarters of the Sisters. January 7, 1947 marked the establishment of St. Theresa's Col