"We can't have full knowledge all at once. We must start by believing; then afterwards we may be led on to master the evidence for ourselves"


Welcome to St. Thomas Aquinas
Catholic High School

Guam's newest Archdiocesan Catholic co-educational high school offering a college preparatory academic program that challenges and develops its students to become moral and productive citizens with global perspectives firmly rooted in the Gospel of Jesus Christ through the teachings of the Catholic Church.

37th Guam Annual Island Wide Science Fair Awards Ceremony.

Congratulations, Class of 2015!

STA Online Payment



The Festival of Lions 2015


Aquinas students received National recognition for their performance in the National Latin Examination administered last month. 
Magna Cum Laude: Brett O'Connor; Cum Laude: Naomi Matsuno, Matthew Domingo, Terance Camacho, Richard Taitano


Aquinas sings songs of gratitude at Ambros, Inc and Law Office of Civille & Tang.


NHS Cleanup Project.