A commitment to transforming lives in the light of the Gospel

High school is a time of tremendous growth and change. During this season, your teen is rising to the challenge of studying more advanced coursework, navigating friendships, and balancing personal responsibilities. They’re learning valuable life lessons they’ll carry through college and beyond.

As a parent, you want to find a private high school committed not only to teaching, but also preparing your teen academically, socially, and spiritually to lead a life of meaning and purpose. At St. Thomas Aquinas High School, this is at the heart of what we do — transforming students’ lives in light of the Gospel.

Below, you’ll find our:

profile of a graduate
mission & core values
the legacy of st. thomas aquinas

St. Thomas Aquinas High School by the numbers


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Profile of a Graduate

THE outcome of an sta education

At STA, we’re proud to have graduates who are superiorly prepared and ready to face the challenges of college and the future calling that God has set for them.

St. Thomas Aquinas High School graduates…

  • Possess knowledge of Christian principles as taught by the Catholic Church and will seek to demonstrate these principles through service to their community.
  • Are effective communicators through the development of reading, writing, and speaking skills as complemented by the utilization of technology.
  • Become critical thinkers who utilize creative and higher-order thinking skills when presented with new concepts and real-life situations.
  • Develop as proficient learners who demonstrate knowledge of their curricular areas of study.
  • Are responsible citizens who respect themselves and others. 

Mission & Core Values


St. Thomas Aquinas High School is a caring community, transforming the lives of students through a rigorous Catholic education, guided by faith and reason, and the light of the Gospel – developing their unique gifts, strengthening their personal faith and integrity, and fostering within them a commitment to justice, service, and moral leadership.

Our Core Values

At STA, we emphasize a learning environment that provides…

College preparatory education.

Your teen will be equipped with academic experiences and crucial life skills to serve them well in college and beyond.

Catholic values and morals.

We foster an atmosphere that upholds the Catholic faith and tradition, teaching students to live a life centered on the Gospel.

Opportunities for involvement.

Extracurriculars such as athletics, fine arts, clubs, and service opportunities abound for your teen to explore.

A welcoming spirit.

Students discover a warm, tight-knit community where they feel a sense of belonging and unity among their peers.

The Legacy of St. Thomas Aquinas

St. Thomas Aquinas is the patron saint of higher education, scholars, theologians, and Catholic schools. His tremendous impact lives on through the many roles he fulfilled: priest, philosopher, theologian, legal expert, and political scientist.

Today, STA is a Catholic high school that serves as a representation of St. Thomas Aquinas’ legacy in education. Our learning environment challenges students and provides some of the most unique and transformative experiences in New England.

Lux in Tenebris


In Latin, Lux in Tenebris means Light in Darkness. St. Thomas Aquinas believed that God is the source of the light of natural reason and faith. This phrase is the cornerstone of everything we do in STA — we are a school born of vision, defined by Catholic character, and intent on enlightening young minds so that they can be the change we wish to see in the world.

Would you like to know more about STA?

As you search for the best private high school in the Seacoast for your family, we’re happy to answer any questions you may have! Please get in touch with our admissions team at (603) 742-1324 or admission@stalux.org.


STA is accredited by the New England Association of Schools and Colleges (NEASC) and adheres to the highest standards of academic excellence set by the institution.

As an accredited top private high school in the Seacoast region, we strive to:

  • Provide an academically challenging curriculum that aligns with the rigorous standards of education.
  • Continuously improve as a school, embracing innovation while staying true to our Catholic values.
  • Be a proactive member of the community through ministry and service opportunities led by our students and faculty.
  • Nurture every student’s unique gifts and talents while celebrating their accomplishments.

Searching for the top private school in the Seacoast region?

As you consider options for the best Catholic high school in Dover, NH, and surrounding communities, we invite you to come visit STA! Explore our beautiful campus, unique teaching philosophy, and caring environment where your teen can thrive.

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