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Trinity High School

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Rooted in Catholic Faith

We nurture hearts and minds through a commitment to love, faith, peace, and justice.

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Who We Are

  • Our Mission

    Our Mission

    Trinity High School, a Catholic, college-preparatory community, provides a safe and caring environment in which students seek and achieve personal and academic excellence and grow in faith.

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  • Discover Trinity

    Discover Trinity

    Discover the Difference at Trinity High School.

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  • Our History

    Our History

    In 1970, changing demographics in the city and the church would necessitate Bishop Bradley High School's merger with two other Catholic high schools in Manchester - Immaculata High School and St. Anthony's High School. The new co-ed Trinity High School was located at the Bridge Street location.

    Our Legacy
  • Student Success Model

    Student Success Model

    We are committed to setting clear, measurable goals that guide our educational philosophy and foster an environment where students can thrive. Our goals are designed to support academic growth, social-emotional development, and the well-being of every individual in our school community.

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Meet Our Education Partners

  • Schedule a Shadow Day

    We encourage prospective students to sign up to shadow a current student for the day to experience a first-hand look at life as a Trinity Pioneer. Students experience our classrooms, community, and daily routines while seeing what makes Trinity such a special place to learn and grow.

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  • Quality, Affordable Education

    At Trintiy, we believe every family should have access to a quality education. Through financial aid, scholarships, and guidance on additional tuition assistance programs, we strive to make that education both accessible and affordable.

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  • Excellence Is Not An Accident

    Through a blend of rigorous and accelerated coursework, designated pathways, as well as targeted extracurricular programs, we foster a culture of excellence, leadership, and growth. Our Student Success Model ensures every student is supported, challenged, and inspired!

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    Our Pillars of Excellence

    Catholic Identity

    Catholic Identity

    We keep Christ at the center of all that we do.

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    Academic Excellence

    Academic Excellence

    In a Catholic school, academic excellence is inseparable from who we are as people of faith and character. 

    Focus Areas
    Community Engagement

    Community Engagement

    We recognize that learning extends beyond the classroom, and one of our core values is service.

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    Holistic Development

    Holistic Development

    We understand that a student's well-being is essential for their academic and personal success.

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    • Catholic Identity

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    • Academic Excellence

      Focus Areas
    • Community Engagement

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    • Holistic Development

      View Principles
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      • 341

      • Students

      • $17.3 M

      • Merit Money Earned

      • 98%

      • College Acceptance Rate

      • 18

      • Average Class Size

    Excellence Since 1970

    Trinity High School’s history is rooted in a long-standing commitment to Catholic education, faith formation, academic excellence, and service—values that continue to shape our mission and vision today.

    Upcoming Events

    All Events

    Next 4 Upcoming Events

    February 26

    • NO SCHOOL - Winter Break

      12:00 AM - 12:00 AM

    February 27

    • NO SCHOOL - Winter Break

      12:00 AM - 12:00 AM

    March 2

    • Canned Food Drive Begins

      12:00 AM - 12:00 AM

    March 4

    • Faculty PLC Meting

      12:00 AM - 12:00 AM

    What Are Others Saying?

    Elise White

    Student Class of 2026

    My time as a Pioneer has been both transformational and fulfilling. Coming from a public middle school, Trinity has allowed me to find my people and t...

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    Christine Hodge

    Parent Class of 2023 & 2026

    Our family is greatly encouraged by the fact that intentional effort is made to hire excellent and caring administration, faculty, and staff who are f...

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    Lauren & Peter White

    Parents Class of 2026

    With two daughters at Trinity, we couldn’t be happier. The small class sizes, accountability, and family-like community make all the difference. The u...

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    Heidi Paris

    Parent Class of 2029

    As parents, choosing the right school for our children will always be one of the most important decisions we make. Among our priorities, when selectin...

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    Cathleen O'Sullivan

    Alum & Parent

    The decision to send my son to Catholic school started as a tradition. It was passed down from me, and my parents, but has evolved into a way of life....

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    Summer Cullen

    Student Class of 2027

    The support I’ve received at Trinity is beyond anything I was given growing up. I can visibly see what this school is developing within me, both on th...

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    Contact Us

    581 Bridge Street
    Manchester, New Hampshire 03104
    Main Office: 603-668-2910
    info@thsstj.org

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    FACTS Website Services

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