Head Coach Jim Koehr

About Jim
  • Seton Coach from 2001 to Present
  • Virginia Independent Schools Athletic Association (VISAA) Coach of the Year – 2018, 2019.
  • Potomac News and Messenger All-County Coach of the Year (’06-’07 and ’09-‘10).
  • Delaney Athletic Conference Coach of the Year thirteen (13) times since 2002.
  • James H. Robertson Excellence in Coaching award from the National Interscholastic Swimming Coaches Association (NISCA) – 2012
  • VISAA Executive Committee Secretary from 2005 to 2019.
  • Host or Co-Host of the VISAA State Championship meet seven (7) times.
  • Swam competitively at the high school level and at the age-group level for two AAU teams in Northern Virginia.
  • Former competitor in numerous endurance events including an Ironman Triathlon and the Great Chesapeake Bay Swim (4.4 miles).
  • Jim and Colleen have had ten (10) children graduate from Seton, eight (8) of whom served as Captain of the Seton Swim Team.
  • They also have their last two (2) children (11th and 12th) currently on the team.

Coach Patrick Mulhern

About Patrick
  • Seton Coach from 2004 to 2007 and 2018 to Present
  • Three (3)-year Captain of the Towson University Swim Team
  • Towson University Scholar Athlete of the Year
  • Former Water Polo player, Water Safety Instructor and Scuba Diver
  • Former Summer League Swim Coach
  • Patrick and Karen’s four (4) daughters all graduated from Seton
  • Why Patrick Coaches: “To give back for all that Seton did for my girls”

Coach DD Ross

About DD
  • Seton Coach from 2004 to 2010 and 2014 to Present
  • Swam competitively at the high school, college and master’s levels
  • USA Swimming Coach for Occoquan Swim Club
  • USA Coaches Safety, CPR and First Aid Certifications
  • Former Water Safety Instructor
  • DD and Dave’s three (3) sons all graduated from Seton
  • Why DD Coaches: “To bring out the best in every child is why I became a coach”

Coach Heidi Santschi

About Heidi
  • Seton Coach from 2017 to Present
  • Competed at the high school level in Swimming, Synchronized Swimming, Volleyball, Softball and Gymnastics
  • Played Beach Volleyball and Power Volleyball 
  • Professional Occupational Therapist
  • Former Water Safety Instructor
  • Heidi and Paul have had six children graduate from Seton and the 7th is still on the team
  • Why Heidi Coaches: “I coach to support the team that provided some of my sons with tremendous opportunities for personal growth.   I love teaching all things water – and the truly amazing kids.”


Coach Kimberly Dalrymple

About Kimberly
  • Seton Coach from 2015 to Present
  • Air Force Veteran
  • Competed at the high school level in Swimming and Volleyball
  • Enjoys playing Ultimate Frisbee
  • Kimberly is a force of nature volunteering to make Seton School a better place.
  • Kimberly and Andy have had one daughter graduate from Seton and serve as Captain of the Seton Swim Team.
  • Her two (2) boys are still on the team
  • Why Kimberly Coaches: “It’s great to encourage students and athletes to do more than they think they can”


Coach Jerry Zadnik

About Jerry
  • Seton Coach from 2011 to Present
  • Competed in Crew at the college level.
  • Competed at the high school level in Swimming.
  • Enjoys playing Swimming and Rowing to keep in shape
  • Working primarily with Seton’s beginning swimmers, Jerry patience and joy are responsible for countless smiling faces when his swimmers start to see success for the first time.
  • Jerry and Vickie have had four (4) daughters graduate from Seton and their last two daughters are currently on the team.
  • Why Jerry Coaches: “Our family is so thankful to be a part of Seton School.  It is good to get involved in a great sport that can push our kids beyond their comfort zone to be more than they thought possible.”

Seton Swimming’s G.E.M.S.

What makes Seton Swimming special?



“Who has it better than us? Nobody!”



We focus on better. Good takes care of itself.



We help our opponents over the bar that we raised by winning



We offer it up. We love all of our teammates.

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