Our History & Origins
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.
At the invitation of Bishop Denis Bradley, the first Bishop of Manchester, Catholic secondary education in the city was entrusted to the Brothers of the Christian Schools, an international religious order founded in France in 1679 and dedicated exclusively to the education of young people in the Catholic tradition. From the beginning, this commitment reflected Trinity’s enduring pillar of Faith, grounding education in Gospel values and service.
Though modest in size, St. Joseph High School was a dynamic and respected Catholic school known for strong academics, successful athletic programs, and the formation of students of character. Competing against much larger schools in Manchester, Nashua, and Concord, St. Joseph teams earned the nickname “the Giant Killers,” a reflection of perseverance, discipline, and excellence—hallmarks of the Trinity pillars of Scholarship and Character.
As enrollment grew, the school expanded in 1951, relocating to 581 Bridge Street and becoming Bishop Bradley High School. The school adopted the nickname “Pioneers” to honor both Bishop Bradley and the Christian Brothers, pioneers in Catholic education. Bishop Bradley High School emerged as the premier Catholic high school in Manchester, graduating thousands of young men who were well prepared for college, leadership, and service to the Church and community—fulfilling the vision of educating the whole person.
In 1970, responding to changing demographics within the city and the Church, Bishop Bradley High School merged with Immaculata High School and St. Anthony’s High School, forming the coeducational Trinity High School. Located at the Bridge Street campus (and for a time at the Immaculata site), Trinity continued its mission under the leadership of the Christian Brothers, the Sisters of the Holy Cross, and the Sisters of Mercy, whose shared dedication strengthened the school’s spiritual, academic, and communal life.
As vocations to religious life declined, lay educators increasingly assumed leadership roles, reinforcing Trinity’s commitment to partnership and service. In 1974, Mr. Thomas Spaulding was appointed the school’s first lay principal, marking an important step in the continued growth and sustainability of the Trinity community.
Trinity’s unique heritage also includes the legacies of St. Joseph School for Boys, St. Joseph School for Girls, St. George High School, and St. Marie High School—schools whose traditions of faith, learning, and service remain deeply embedded in Trinity’s identity.
Today, Trinity High School carries forward the collective legacy of Catholic secondary education in Manchester. Guided by our Mission, inspired by our Vision, and grounded in our pillars of Faith, Scholarship, and Character, Trinity continues to educate students who are prepared for college, committed to service, and called to live lives of purpose and integrity. The names displayed in our gymnasium serve as a daily reminder of the rich history that continues to shape the Trinity experience.
A New Chapter, Honoring Tradition
The 2024–2025 school year marked a historic milestone as Trinity High School as we welcomed Saint Joseph Junior High to the Trinity High School campus at 581 Bridge Street. This move brought together generations of Catholic education in Manchester, uniting long-standing traditions with modern facilities designed for today’s learners.
The new, purpose-built space offers enhanced classrooms, integrated technology, and opportunities for collaboration—all while remaining firmly rooted in Catholic identity. Here, students experience a learning environment that prepares them for high school and beyond, without ever losing sight of the values that define a Trinity education.
The Brothers De La Salle
The Brothers of the Christian Schools, also known as the Christian Brothers (De La Salle), form an international Catholic religious order dedicated exclusively to the mission of Christian education. Organized into five geographic regions encompassing more than 35 districts, the Brothers serve nearly 1,000 schools and educational centers worldwide, along with numerous children and family service programs in over 80 countries. Through their ministries, the Brothers educate nearly one million students at all levels.
Today, the Brothers of the Christian Schools are the largest religious order of Brothers in the Catholic Church devoted solely to education, continuing the charism and vision of their founder through faith-filled teaching and service.
Bishop Denis M. Bradley, First Bishop of Manchester
Bishop Denis M. Bradley, the first Bishop of Manchester, played a pivotal role in Catholic education in the city by inviting the Christian Brothers of De La Salle to staff and guide the school. His leadership helped establish a strong foundation of faith, scholarship, and service that continues to influence Trinity High School today.
St. John Baptist de La Salle, Founder of the Brothers of the Christian Schools
St. John Baptist de La Salle founded the Brothers of the Christian Schools in 1679 in France. A pioneer in Catholic education, he dedicated his life to the formation of teachers and the education of young people, especially the poor. Canonized a saint and recognized as the Patron Saint of Teachers, St. John Baptist de La Salle’s vision continues to guide Lasallian schools around the world, including Trinity High School.