Why STA?

The mission of St. Thomas Aquinas High School is to transform the lives of our students through a rigorous Catholic education guided by the light of the Gospel.

Since opening its doors in 1960, St. Thomas Aquinas High School has become a model of academic excellence and 21st century educational vision for New Hampshire’s Seacoast. Remaining true to its founders, the School Sisters of Notre Dame, St. Thomas Aquinas maintains a mission to challenge, support and transform young adults so that they are wholly prepared to lead a life enriched by intellectual discourse and humanistic integrity.

In adherence to our mission, we offer students the opportunity to develop their unique gifts, to strengthen their personal faith and integrity, and to foster within them a commitment to justice, service and moral leadership.

We are proud of our Catholic tradition, our outstanding academic program and our comprehensive athletic, arts and extracurricular offerings.

St. Thomas Aquinas High School is a community where each student is encouraged to aim high- and then soar higher.

Click on the following video testimonials and see yourself as a Saint!


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Performing Arts Program

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Athletics Program

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Visit STA's 2019-20 school profile here. 

College Preparation is always on our minds!

Admissions Director, Dr. Danny Richer, shares his wealth (and wall) of knowledge!

100% of our 2020 Graduates are moving on to higher education or mission/ vocation plans! Click to view!

View Recent College Acceptances

We were fortunate enough to be able to experience St. Thomas 12 years ago with Elizabeth and can't say enough wonderful things about STA.  I am always telling parents when they ask where Alyson is going to high school that she will be attending STA.  It prepared Elizabeth above and beyond what we could have ever dreamed for college and has helped make her the kind of person she is today.  We love being able to send our children to a school that promotes the same values as we do at home and reiterating our faith as well.  - Felicia Rose, mother of Elizabeth '10

Olivia is in her freshman year at Lasell College in Newton, MA. Not to brag but thanks to a very strong Catholic School foundation she has a midterm GPA of 4.0! I could not be more proud and I can tell you that her studying habits and strong faith from both Sacred Heart School and STA have been invaluable. We are so blessed to have been a part of both communities. –Beth Faulkner, P’18