"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.

Photo Gallery

Visit our gallery for more photos, HERE



Japanese Cultural Performers visit to STA.

10/14/2014 All-Island Golf Championship


Day 4 of Japan Super Science Fair


Day 1 of Japan Super Science Fair

STA Online Payment