"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.

STA Online Payment

10/16/2014 Gala DInner

Photo Gallery "Gala Dinner 2014"

Online Survey

In an effort to help move the school forward, we humbly ask you to complete a survey focusing on the vision and mission of the school. The survey should only take a few minutes to complete.

* STA survey (adults)

* STA survey (students)



10/14 IIAAG All-Island Golf Championship

STA Boys & Girls Golfers, Congratulations on your 1st place (boys) and 2nd place (girls) standing in the 2014-2015 IIAAG Golf season!

Congratulations to Devin Hua who came in second place and Terance Camacho who came in third place in the 2014-2015 IIAAG All-Island Golf Tournament held on October 14, 2014.


After the game against Guam High. STA's record for the 2014-2015 IIAAG season is 10-6.

See Scoreboard.