December 9 All School Mass (Immaculate Conception of Mary) Cathedral High School 74 Union Park Street, Boston, MA, United States
December 20 Spirit Day (Half-Day) Cathedral High School 74 Union Park Street, Boston, MA, United States
January 27, 2025 @ 8:00 am - January 30, 2025 @ 11:15 am Midterm Exams Cathedral High School 74 Union Park Street, Boston, MA, United States
February 6, 2025 All School Mass Cathedral High School 74 Union Park Street, Boston, MA, United States
March 25, 2025 Admitted Student Event Cathedral High School 74 Union Park Street, Boston, MA, United States
April 17, 2025 Holy Thursday – All School Mass Cathedral High School 74 Union Park Street, Boston, MA, United States
May 3, 2025 @ 8:30 am - 12:00 pm Golden Diploma Cathedral High School 74 Union Park Street, Boston, MA, United States
May 5, 2025 - May 9, 2025 Teacher Appreciation Week Cathedral High School 74 Union Park Street, Boston, MA, United States
May 5, 2025 - May 16, 2025 AP Testing Cathedral High School 74 Union Park Street, Boston, MA, United States
May 16, 2025 Last day of classes for seniors Cathedral High School 74 Union Park Street, Boston, MA, United States
May 19, 2025 - May 23, 2025 Senior Week Cathedral High School 74 Union Park Street, Boston, MA, United States
May 29, 2025 Baccalaureate Mass and the Ascension of Jesus Cathedral High School 74 Union Park Street, Boston, MA, United States
June 2, 2025 @ 8:00 am - June 5, 2025 @ 11:15 am Final Exams Cathedral High School 74 Union Park Street, Boston, MA, United States
