Resource Header Slideshow
Pursuing Truth Through Faith and Reason
St. Sebastian’s at a Glance
Our total enrollment and number of chapel speeches given each year
Advanced Placement (AP) courses
average graduating class size
of students receive need-based financial aid
News and Events
Parents of the Class of 2023 gathered on the evening of Sunday, June 4, to celebrate their sons and kick off graduation week with the Senior Parent Dinner.
The Class of 2023 gathered on the Class of 2007 Terrace at the Griffith Headmaster’s House on Wednesday, May 31, to celebrate the annual Alumni-Senior Breakfast.
St. Sebastian's School is proud to recognize its student-athletes for their performance on the Arrows varsity baseball, golf, lacrosse, and tennis teams, as well as our ultimate team.
Parents, Alumni and Parents of Alumni gathered on the Class of 2007 Terrace at the Headmaster Griffiths House on Tuesday, May 30 for the Volunteer Appreciation Cookout.
Nine members of the Class of 2024 gathered at the Craigville Retreat Center on May 21 and 22 for the Junior Retreat.
Family and friends of MPA gathered in Ward Hall to share in a wonderful meal and celebrate senior members at the annual Men with Positive Attitudes Banquet on Thursday, May 25.
St. Sebastian's School held a Foreign Language Awards Ceremony on Thursday, May 25, 2023.
Jack McHugh '24 gave a speech at the Needham Memorial Day Ceremony on Monday, May 30, 2022.
St. Sebastian’s welcomed back two of their own to address the Athletics Media Club on Thursday, May 25.
This past Saturday, May 20, members of grades 9 and 10 volunteered at the Miracle League.
St. Sebastian's School is proud to recognize the following students who were presented with awards for their academic achievements during the Undergraduate Awards Assembly held this morning, May 24, 2023.
Mothers from across the grades gathered in the Burke Family Center’s Wrestling Room for a great night out to celebrate the Guild of St. Irene Closing Event & Fashion Show on May 18.
The Annual Headmaster Golf Scholarship Tournament was held at the Charles River Country Club in Newton on May 15.
Nearly 250 alumni participated in Reunions Weekend honoring the 3’s and 8’s from 1948 – 2018.
“The time and devotion given to every student by every teacher is incredible to say the least.”
“Once in. Never Out. It’s resoundingly true. Alums are always coming back as though they never left.”
“St. Sebastian’s is more than a school or a community. It is a family.”
Why St. Sebastian’s?
The best way to experience the mission of St. Sebastian’s is by visiting our campus in person. In the meantime, here is a glimpse of life on Greendale Avenue.