[1] Having found themselves transferring from one place to another due to the work of his father, Jaucian's family eventually settled in Urdaneta City, Pangasinan, where he came to know the Divine Word Society (SVD), which has a Secondary School Institution in this city - the Divine Word Academy of Urdaneta (now Divine Word College) [2] Jaucian took his high school studies in this academy, after which, in 1976, he went to work as a sacristan at the SVD's Christ the King Seminary, in Quezon City.

It was while having this work that he discovered his vocation to the priesthood, and expressed his intention to join the Divine Word Society.

[6] Thus, he was sent to Taiwan for the Oversea's Training Program, from 1982 to 1984. it was in Taipei where he finished his theological formation in 1987, at the Fu Jen Catholic University.

[9] After ordination, the new priest went back to Taiwan, where he worked as assistant pastor at the St. Joseph the Worker Parish in Chiayi for one year.

[14] Pope Benedict XVI named Leopoldo Jaucian as Bishop of the Diocese of Bangued, Abra, on 5 January 2007.