Xaverian teachers serve as much more than teachers; they are mentors - deep listeners and keen observers who get to know and appreciate each student.
As any explorer will tell you, having an experienced guide will dramatically increase one’s chances of success. Xaverian teachers, of which more than 95% have advanced degrees, help students see the obstacles as well as the opportunities ahead, advising them on the best course based on their unique abilities. And Xaverian teachers genuinely know where the students are coming from because many of them were once Xaverian students themselves.

Bright and energetic, caring and accessible, Xaverian teachers are committed to their students’ success.

Faculty Directory

  • Photo of Timothy Gardner
    Mr. Timothy Gardner
    Worcester Polytechnic Institute - M.M.E.
    Williams College - B.A.
    Bio
     
    Mr. Timothy Gardner, P ’19, joined Xaverian in the 1998-1999 school year. He earned his B.A. in English from Williams College and his Master of Mathematics for Educators from Worcester Polytechnic Institute. Mr. Gardner previously taught at Suffield Academy and Worcester Academy. At Xaverian, Mr. Gardner has served as a coach for lacrosse, wrestling, soccer, and football. 
  • Photo of Kimberly Gargano
    Mrs. Kimberly Gargano
    Syracuse University - B.S.
  • Mr. Christopher Georgules
    Boston College - B.A.
    Boston College - M.Ed.
  • Photo of Jessica Giberson
    Mrs. Jessica Giberson
    Southern New Hampshire University - B.S.N., R.N.
  • Photo of Robert Gill
    Mr. Robert Gill
    Quinnipiac University - B.S.
    St. John's Seminary - M.A.
    Bio
     
    Mr. Robert Gill joined Xaverian in the 2002-2003 school year as a campus minister and theology teacher. He graduated from Quinnipiac University with a B.S. in health science and from St. John’s Seminary with an M.A. in ministry. He has taught both the junior and senior theology courses while at Xaverian. Prior to joining the Xaverian community, he was the Coordinator of Youth Ministry at St. Paul Parish in Wellesley.
  • Photo of Catherine Goldberg
    Ms. Catherine Goldberg
    Providence College - B.A.S.
    Providence College - M.Ed.
    Bio
     
    Ms. Catherine Goldberg joined the faculty in the 2022-2023 school year. She has a Bachelor of Science and a Master of Education from Providence College. Prior to Xaverian, Ms. Goldberg taught theology at Bishop Hendricken High School in Warwick, RI. 
  • Photo of Matthew Greeley
    Mr. Matthew Greeley
    Boston College - B.A.
    University of Notre Dame - M.A.
    Bio
     
    Mr. Matthew Greeley is a graduate of the Class of 2015. He joined the campus ministry team in the 2022-2023 school year. Prior to Xaverian, he served two years as a high school campus minister in the Diocese of Gary, Indiana, and one year as a middle and high school theology teacher in Boston. He has a B.A. from Boston College, where he double majored in theology as well as applied psychology and human development. After his graduation from Boston College, he earned an M.A. in theology from the University of Notre Dame.
  • Photo of Christopher Gruslin
    Mr. Christopher Gruslin
    University of Notre Dame - M.Div.
    University of Notre Dame - B.A.
    Boston College - M.Ed.
    Bio
     
    Mr. Christopher Gruslin joined Xaverian in the 2018-2019 school year. He graduated from the University of Notre Dame with a Bachelor of Arts in Theology and a minor in medieval studies. He earned a Master of Divinity, also from the University of Notre Dame. Besides teaching theology, Mr. Gruslin serves as the head coach for the JV ultimate disc team.
  • Photo of John Guinan
    Mr. John Guinan
    Dean of Students
    Assumption University - B.A.
    Boston College - M.A.
  • Photo of Sean Gunning
    Mr. Sean Gunning
    Boston University - B.A.
    Boston College - M.Ed.
    Bio
     
    Mr. Sean Gunning ’11 joined the faculty in the 2015-2016 school year, currently serving as chair of the Science Department. Mr. Gunning has taught grade 7 and 8 science, biology, AP biology, and the Science Research & Capstone class. He also coaches FXD basketball and FXD baseball. Mr. Gunning holds a B.A. in biology and psychology from Boston University, a M.Ed. from Boston College, and a graduate certificate in STEM education from Bridgewater State University. He is currently working towards a M.S. in biological sciences through Clemson University.
  • Photo of Laura Guzzi
    Mrs. Laura Guzzi
    Roanoke College - B.A.
    Simmons College - M.A.
    Bio
     
    Ms. Laura Guzzi, P ’24, joined the Xaverian faculty in the 1996-1997 school year. She has a Bachelor of Arts in Spanish from Roanoke College and a Master of Arts in Spanish from Simmons College. Prior to coming to Xaverian, she taught at Our Lady of Nazareth Academy in Wakefield. She studied in both Spain and Mexico. Ms. Guzzi serves as the co-moderator of the international culture club and is a member of the National Honor Society selection committee. 
"My teachers are awesome. I was never really a big fan of English but Mr. Brodeur, my English teacher, has helped me enjoy going to class. He just makes classes really fun and keeps us engaged. We do different activities, not just reading and writing all the time. It’s one of my favorite classes now."

- Peter T. '26

Xaverian Brothers High School

Phone: 781-326-6392
Fax: 781-320-0458
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Xaverian is a Catholic, college-preparatory school for boys in grades 7-12. As an inclusive community, we embrace diverse experiences and perspectives, welcoming students and families from all faiths and backgrounds. Through exceptional academics, athletics, the arts, faith formation, and service opportunities, we help young men discover their unique gifts and talents so they can share them with a world in need.