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St. Thomas Aquinas High School

Boys Varsity Lacrosse


Coaches

Sean Houlahan.


Head Coach

Biography:
Coach Sean Houlahan has been with the Saints since 2014 and brings a wealth of knowledge and experience to the boys lacrosse program.  He is a graduate of Shaker High School in Loudonville, NY and he played collegiate lacrosse at Boston College.  Coach Houlahan has an extensive coaching background that includes a year long coaching stint at his alma mater high school and a nine year span with the Dover High School (NH) lacrosse program. Along with being the Head Coach for St. Thomas Aquinas, he also owns and  runs Houlagan Lacrosse, a premiere club lacrosse program for the seacoast. He was a standout player throughout his high school and collegiate career and he strives to share his knowledge with young players. He has twice been selected as Foster's Coach of The Year (2011, 2015). Coach Houlahan resides in Dover, NH with his loving wife and three kids who love playing and watching their dad coach lacrosse.   
 
2019 DII Boys Lacrosse Coach of the Year

 

Matt Janetos.


Assistant Coach

Biography:

Coach Janetos has been assisting the Saints since 2014 as the program's defensive coordinator. A graduate of St. Thomas Aquinas in 2009, he helped lead the Saints to two state titles and a semi finalist run. He is a graduate of Le Moyne College in Syracuse, NY where he played three seasons for the Dolphins; a perennial powerhouse in Division II. 

Along with his time coaching the Saints, Coach Janetos works with the seacoast's local club program, Houlagans Lacrosse, at the high school level helping student-athletes with the college recruitment process. Coach Janetos resides in Rollinsford and works for Janco Electronics, Inc., a family owned and operated electronics contract manufacturer.

Daniel De Tolla.


Assistant Coach

Biography:

Coach De Tolla was named as head coach of the boys lacrosse program during the Summer of 2025 following many years with the St. Thomas Aquinas community.

De Tolla is a highly decorated former player and veteran coach. At Half Hollow Hills East High School (1988-1990), he was a two-year starter in both varsity soccer and lacrosse, captaining both teams as a senior and earning First Team All-County honors in lacrosse during his junior and senior years.

At Yale University (1990-1994), he was a four-year starter on defense, honored as a Second Team All-American as a sophomore and two-time First Team All-American as a junior and senior. He was uniquely elected as the sole team captain his senior year and represented the North squad in the Division I North-South senior game.

Following college, De Tolla served as a defensive consultant and model player for the USA Lacrosse Progression Video Series and captured the California State Club Championship with a Yale-UNC-Brown alumni team - all in 1994-95. He began his coaching career in Buffalo as assistant coach at Williamsville South and defended as head of defense at Millon Lacrosse Camps through 1998. After a decade focused on medical school and family, De Tolla helped build youth lacrosse in New Hampshire from 2006 onward. He served as Portsmouth High School defensive coordinator (2006-2016), founded U9/U7 programs for Seacoast Lacrosse (2007 onwards), and coached multiple NHYLA State Championship teams across youth travel clubs. He also previously served as the defensive coordinator at STA in 2017-2018.

Coach De Tolla and his wife Elizabeth have raised four children who have all gone on to play Division 1 college lacrosse. Henry played at STA (2017-2019) and continued his lacrosse career at UMASS Lowell. Camden played at STA (2019) and continued his lacrosse career at IMG Academy and currently at Canisius University. Finley played for STA (2022-2025) and will be doing a PG year at IMG Academy and then playing for Sacred Heart University for the 2027 season. Charlotte is currently a senior at STA and has committed to UVM next year.

 

Pat Santos.


Assistant Coach

Biography:

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