Coaches

Head Coach Jim Koehr

About Jim
  • Seton Coach from 2000 to Present.  Head Coach since 2002.
  • 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).
  • Conference Coach of the Year sixteen (16) 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 (precursor to USA Swimming) in Northern Virginia.
  • Former competitor in numerous endurance events including the Lake Placid Ironman Triathlon and the Great Chesapeake Bay Swim (4.4 miles).
  • Jim and Colleen have had eleven (11) children graduate from Seton, nine (9) of whom served as Captain of the Seton Swim Team, two (2) of whom were All-State swimmers, and one (1) of whom was a High School All-America.
  • They have their last child (their 12th) currently on the swim and the dive team.
  • Coach Koehr and his wife Colleen have 16 grandchildren who are not at Seton quite yet.  A 17th is on the way.

Head Diving Coach Ashley Keapproth

About Ashley
    • Seton Diving Coach from 2020 to the present
    • 2023 VISAA State Diving Coach of the Year
    • Coached four (4) of the top 16 State Finalists in 2024, including the State Champion
    • Dove at George Mason University 2000-2004
    • Finalist in 1M and 3M springboard in all four GMU Conference Championships
    • Tennessee State High School Champion and Tennessee State Diver of the Year, 1999
    • Put herself through law school by coaching diving.  Currently practices employment law.
    • Has experience coaching all levels of diving from beginners through Junior National champions
    • Lives in Nokesville with her husband Nik and two young children

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.”

Coach Ross Palazzo

About Ross
  • Seton Coach from 2020 to Present
  • Graduated from the University of Florida in December 2019 with a Bachelor’s Degree in Mechanical Engineering
  • 4-time SEC Champion at the University of Florida 2015-2019
  • Olympic Trials and NCAA Championship Qualifier (200 IM, 400 IM, 100 BR, 200 BR)
  • Finalist at US National Championships & US Open 2013-2020 (200 IM, 400 IM, 100 BR, 200 BR)

Why Ross Coaches

“I love the sport of swimming, and I am excited to be part of a group that is committed to compete in the Seton way of G-E-M-S. I swam competitively for almost 20 years, encompassing all levels, and I want to help young athletes advance in the sport to achieve their goals.”

 

Coach John Halisky

About John
  • Seton Coach since 2019
  • Competed in Rugby in high school and baseball in college
  • Enjoys fishing, playing golf, weight lifting, and staying fit to keep ahead of his children.
  • John and Leah have 5 children including one (1) graduation and two (2) currently attending Seton and on the team.

Why John Coaches:

“I coach because of the positive influence Seton Swim has had on my own children. There are not many schools where the parents run the show and without parents stepping up there would be no Seton Swim Team.”

 

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 five (5) daughters graduate from Seton and their last daughter is currently a Captain and Assistant Coach 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.”

Coach Joe Hurley

About Joe
  • Seton Coach since 2021
  • Oldest two children compete on the team with one more planning to come to Seton
  • Wife Madeleine teaches math at Seton
  • Enjoys Running and Kayaking
  • Works as a Senior Director of Statistical Programs at the US Postal Service

Why Joe Coaches:

“It’s great to be involved with such a great swimming program.  I am honored to be working with Coach Koehr and the other coaches on this team.”

Coach Matt Schroer

About Matt
  • Seton Coach since 2022
  • US Marine Colonel with multiple global deployments throughout a career that started in 2000.  His career has included Command at all levels in both the United States and in Combat.
  • Grew up in Cleveland, OH playing offensive line for a multi-time Division 1A and National Champion and then at the United States Naval Academy.
  • Matthew and Krista’s 6 children attend St. John Paul the Great, Seton, and Renaissance Montessori School.  They currently have two (2) daughters on the team with the rest to follow.

Why Matt Coaches:

“I enjoy learning from and being part of a program of excellence that fosters multi-dimensional development among its players and coaches.”

Coach Kevin Koehr

About Kevin
  • Previously coached at Seton from 2016-2017.
  • On the Seton Swim team from 2001 to 2006.
  • NISCA High School All-America, National Catholic High School Champion, and Individual State Champion for Seton in 2006.
  • Captain of Seton’s first State Championship team
  • Current Seton team record-holder in 100 Back (51.48), 50 Back (24.51), and the 200 Medley Relay (1:39.82)
  • Swam at Virginia Tech where he was in the Corps of Cadets
  • Army officer for 8-years, including a deployment to Afghanistan.
  • Married to fellow Seton graduate Eileen (Heim) Koehr with one child and another on the way.

Why Kevin Coaches:

“The reward of swimming isn’t in winning races.  It is in the daily building of the virtues it takes to win in life.”

Coach Patrick Heiny, Dryland

About Patrick
  • Seton Coach since 2021
  • US Marine Officer serving as an infantryman with a deployment to Iraq, two deployments to Afghanistan, and a deployment with the Marine Expeditionary Unit.
  • Grew up in Orange County, NY swimming year-around with the American Red Cross and playing baseball in high school.
  • Eagle Scout
  • Patrick and Eileen have 5 kids, two (2) of whom are at Seton and one (1) of whom is on the team.

Why Patrick Coaches:

“I am excited to coach to spend the time with my children as well as to witness our younger generation work hard and push themselves to achieve greatness.”

Coach Kimberly Dalrymple

About Kimberly
  • A driving force at Seton and for the Seton Swim team since 2015
  • Lane coach 2015-16, 2018-22
  • Swam and played volleyball during high school, loves ultimate frisbee as a Mom
  • Air Force Veteran
  • Currently studying for a law degree
  • Three (3) kids graduated from Seton, all three (3) of which served as Seton Team Captains

Why Kimberly Coaches:

“It’s great to encourage students and athletes to do more than they think they can do.”

Coach Scott Kay

About Scott
  • Seton Coach since 2022
  • Swam competitively for 13 years in Southern California
  • Previously coached age-group swimmers for a summer league team
  • Vice President of Finance for Christendom College
  • One (1) daughter and one (1) son at Seton, both of whom are on the team.
  • Scott and Margaret have eight (8) children and live in Warrenton, VA

Why Scott Coaches:

“The consistency, dedication and hard work necessary to be a good swimmer are habits that will stay with Seton swimmers for the rest of their life.  Being a part of that process is just down right fun.  Win the day!“

Coach Anne Judge

About Anne
  • Coach at Seton since 2021
  • Participated in every sport available in rural Missouri EXCEPT swimming
  • Played Division II soccer at University of Dallas
  • Coached CYO volleyball
  • Business owner turned homeschool mom and American Heritage Girls Leader who loves to roll up her sleeves and help.
  • Mike and Anne have two (2) of their four (4) kids at Seton and on the team.

Why Anne Coaches:

“Swimming is a sport the whole family can enjoy. There is no other sport that allows all the kids in the family to participate at the same time. Summer swim at Sudley Club has opened my eyes to the beauty of the sport: it’s a life-long activity; it’s individual and team based; it builds confidence and skill. I’m grateful for the chance to learn even more and to help the Seton swim community.”

Coach Sandy Osilka

About Sandy
  • A daughter on the Seton Swim Team
  • Coach at Seton since 2020
  • Physical Therapist

Why Sandy Coaches:

“I started coaching for Seton Swim in 2020, during the COVID pandemic. I remember taking temperatures every morning as the kids arrived. It was remarkable to see the effort Coach Jim put in to ensure that Seton had a swim team and, even more impressively, swim meets that year. I have learned a lot about swimming technique, but I’ve also come to appreciate the wonderful group of kids and adult volunteers at Seton. Many adults who no longer have children at Seton continue to lend their support, which is a beautiful testament to God’s love and providence. I look forward to another great year with Seton Swim.”

Coach Casey Beltran

About Casey
  • Coach for Group 5 Swimmers since 2024
  • One child graduated from Seton, one child currently on the team, and three more coming in the future
  • High School Swimmer and Water Polo player in California
  • Age-Group USA swimmer during middle school in California

Why Casey Coaches:

“I am blessed to be able to coach at Seton, especially with this swim team. Swimming is a beautiful sport that seems to give access to all athletes at every and any stage of their journey. Having had a child go through some heavy medical issues, I got to see first hand how swimming is a sport that is also healing and lifelong.

I know when I dive in the water, I am taken back to my years as a (reluctant) swimmer and I realize just how much those years of practice meant to me. I can’t wait to support these kids through a season of swim that I know they will look back on even 20 years from now with even more appreciation than they know. “

Coach Mary Claire Osilka

About Mary Claire
  • Joined the team as 7th grader in 2020
  • Swimmer since age 7
  • Group 5 Coach at Seton since 2023

Why Mary Claire Coaches:

“I wanted to coach because I want to help other athletes become better swimmers – and better people too.”

Coach Joanne Pretz, Diving

About Joanne
  • An early leader of Seton Swimming in the 1990s and early 2000s.  Known as the “Godmother of Seton Swimming”
  • Mother of three (3) Seton Swimmers and Grandmother to a current swimmer and a current diver
  • Earned a bachelor’s degree in physical education with a concentration in adaptive P.E. from Western Michigan University in 1974.
  • Complete graduate work in Special Education at Wayne State University
  • In 1982, Joanne turned her attention to her growing family while teaching swim lessons
  • Swim lessons turned into swim teams at Alamogordo, NM.
  • Started as Assistant Coach for Diving in 2023 using her background in developmental movement to help the younger divers develop.

Why Joanne Coaches:

“Diving is so much fun!”

Coach Briana Shillingburg

About Briana
  • Senior on the Seton Swim Team
  • Seton Swimmer since 2021
  • Group 5 Coach at Seton since 2024

Why Briana Coaches:

““I started out swimming in Group 5 and was able to grow so much thanks to amazing coaches.  I want to help younger swimmers do the same thing.”

Coach Elodie Brox

About Elodie
  • Coach for Group 5 Swimmers since 2024
  • Summer league coach since 2023
  • Current Seton Team member and Captain
  • Joined the Seton team in 7th grade
  • Started the sport of swimming in 2013

Why Elodie Coaches:

“I coach because Seton Swimming has helped me and my peers become better people in more ways than just as swimming. To be able to help the next generation of Seton swimmers would be a blessing.”

Coach Michael Brox

About Michael
  • Coach for Group 5 Swimmers since 2023
  • Current Seton Team member and Captain
  • Joined the Seton team in 7th grade
  • Started the sport of swimming in 2013
  • Word of Advice: Don’t be a slacker

Why Michael Coaches:

“I want to be a good influence on the kids so that they can be the best swimmers and people possible.”

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