1963-1966 - Brother Marcellus Feeley, C.F.X. serves as Xaverian's first headmaster. He was the last Xaverian Brother to be the principal of Mission High School.

August 31, 1963 - His Eminence Richard Cardinal Cushing leads dedication service of Xaverian Brothers High School.

September 5, 1963 - First day of school at Xaverian Brothers High School. 290 students, all ninth graders, enroll. These freshmen will become Xaverian's first graduating class, The Class of 1967.

1966-1970 - Brother Gilroy Bishop, C.F.X. serves as Xaverian's second headmaster.

June 12, 1967 - Xaverian's first Commencement. The Class of 1967 includes veteran teachers Phil Penza and Denis Smith. Valedictorian Richard Czaja '67 enrolls at Yale University, starting a long tradition of Xaverian graduates at elite colleges and universities.

1970-1984 - Brother William Drinan, C.F.X. serves as Xaverian's third headmaster.

September, 1973 - The school starts Friday night Bingo as an effective fundraiser.

August, 1977 - The first-ever Xaverian Leadership Institute is held. At the time it was called a Student Leadership Retreat and only twenty students participated.  Over the years, XLI has become an annual five-day retreat in August for seniors.

March 13, 1978 - The J. Geils Band performed a concert at a Xaverian dance.

October 23, 1980 - Blue Oyster Cult made XBHS a stop on their national tour.

1984-1991- Brother Richard Cook, C.F.X. serves as Xaverian's fourth headmaster. 

School Year 1986-1987 - The first of many campus improvements begin, including:

o Replacement of the roof
o Brickwork repair to strengthen walls
o Expansion and resurfacing of the parking lots  

 School Year 1988-1989. Another round of campus improvements including:

o Storage areas built behind the gymnasium (now the varsity locker room) and under the bleachers
o Refurbishing of the weight room.
o The corridor near the Chapel was converted from a residence for the Xaverian Brothers to new office space.
o The basement area near the kitchen was converted to a Computer Center and an Art Center.

August, 1989 - Xaverian Brothers High School celebrates its 25th Jubilee Anniversary.  

September, 1991 - Only 611 students are enrolled in the entire school. 

1991- Present - Brother Daniel Skala, C.F.X. serves as Xaverian's fifth headmaster. During his tenure at Xaverian, school enrollment has increased 70% and the school has recently completed $25,000,000 building program as well as a $12,100,000 capital campaign. 

1991 - Present - Mr. Domenic Lalli serves as the first principal of Xaverian Brothers High School. 

May 4, 1991 - Jay Leno performs in Xaverian's Gymnasium. The event was sponsored by the 1971 Reunion Committee. 

September 26, 2001 - Xaverian celebrates the dedication of campus changes that included the addition of the 18,000 square foot Library and the Jack and Pamela Egan Technology Center, new fitness Center and expanded Locker Rooms, and renovated physics, biology and chemistry laboratories. 

October 1, 2002 - The Francis Xavier Society Reception celebrates the successful completion of Xaverian's first capital campaign, The Campaign for Xaverian: A Legacy of Values, which raised $12.1 million. The following areas of the school were dedicated:

o The Josephine M. Noble Chapel
o The Sarah M. Bisson Foyer
o The Rocco Zoppo Wing
o The Charles Duddy Physics Lab
o The Jack and Pamela Egan Technology Center

September, 2003 - The varsity field and stadium is renovated. New steel home and away bleachers are installed and synthetic Field Turf replaces the natural turf. A wireless network is installed throughout the building for wireless Internet access. All classrooms receive LCD projectors. 

May 13, 2003 - Andre W. Touafek '03 becomes the 7,000th graduate of Xaverian. 

April, 2004 - The new classroom wing is completed. The 15,000 square foot classroom wing includes a new art center, faculty and staff dining room, three new department centers and five new classrooms.

September, 2004 - Another round of campus improvements are finalized. Included in this project are:

o All classrooms' black chalk boards are replaced with white marker boards.
o The 6,000 square foot lower lobby and entrance
o New campus ministry center
o New music center
o Renovation of the new theater
o New bookstore
o Renovation of the cafeteria and addition of 24 skylights