Santiago Fonacier received his secondary education and pursued a Bachelor of Arts course at the Escuela Docente de Laoag. This institution was accredited by the University of Santo Tomas and the Liceo de Manila. Before joining the seminary, this educational background provided him with foundational knowledge and skills that likely benefitted his later theological studies.
For further details, you can check the Wikipedia page on Santiago Fonacier: Wikipedia - Santiago Fonacier.
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