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Drone photo of St. Sebastian's campus

Resource Header Slideshow

7th grade student speaker
A Mission-driven Community

St. Sebastian’s offers the best of the Catholic and Independent School traditions, with a mission that sets us apart from other schools in our league.

Students work in the Innovation Lab
Inspiring Innovation

The Innovation Lab provides a creative space for a hands-on experience that encourages students to invent, create, innovate, and collaborate.

Learn more.

Theater students rehearse a scene
Beyond the Classroom

Pursuing Truth Through Faith and Reason

“The order of the day is to love God, work hard, and take good care of one another.”
William L. Burke III, Headmaster

St. Sebastian’s at a Glance

The nature of the experience while here and the powers gained from having been here.


Towns represented by the student body


Our total enrollment and number of chapel speeches given each year


of graduates attend four-year colleges


Teams compete in 13 different sports as part of the ISL


Student clubs and organizations


Advanced Placement (AP) courses


average graduating class size


of students receive need-based financial aid

News and Events

Every young man will be known and loved and called to greatness.



“The time and devotion given to every student by every teacher is incredible to say the least.”

Gabriel Twohig ’21

“Once in. Never Out. It’s resoundingly true. Alums are always coming back as though they never left.”

Dan Fulham ’14

“St. Sebastian’s is more than a school or a community. It is a family.”

Jeanne McKenzie, P'18.'20