Richard Cardinal Cushing, Archbishop of Boston, officiated at the dedication of Cardinal Spellman High School on October 20, 1958. He blessed its buildings and laid the cornerstone during the ceremony. The school was named in honor of Francis Cardinal Spellman, whose birthplace was in the neighboring town of Whitman, Massachusetts. "Sequere Deum - Follow God" was taken from Francis Cardinal Spellman's coat of arms and used as the school's motto. In September 1958, 300 students began their school careers as students at Cardinal Spellman with Sister M. Vera, CSJ as the founding Principal and a faculty of ten
Sisters of Saint Joseph of Boston. Many Sisters worked at Cardinal Spellman over the years. There are no longer any Sisters of Saint Joseph currently working at Spellman. The last one, Sr. Patricia Lynch, left in July 2012. On December 6, 1963, Cardinal Spellman High School, along with several other secondary schools in the Archdiocese of Boston, was incorporated as a member of the Archdiocesan Central High Schools, Inc. In 1979, the New England Association of Schools and Colleges awarded Cardinal Spellman High School its initial accreditation; in 1989 and again in 1999, the school was re-accredited for successive ten-year periods. Cardinal Spellman High School was elected as a permanent member of the College Board in 1983. The school is also affiliated with the
National Catholic Educational Association. Cardinal Spellman High School was incorporated in January 2004 after the board of trustees of the Archdiocesan Central High Schools, Inc., determined that each of its schools would be best served by becoming an independent public juridic institution governed by its own board of trustees. Beginning on September 1, 2004, Spellman's board of trustees took over the responsibility of governing the school. ==Scandals==