Meet our Counselors

Click here to learn more about some of the fabulous counselors who work with your campers every day!

Mimsy Stirn, Director of Auxiliary Programs

Mimsy has been a member of the Potomac Community for more than 25 years as both a parent and teacher. She was Potomac's middle school music teacher for 10 years before becoming Director of Auxiliary Programs in 2010. Mimsy oversees all auxiliary programs including our ETC After School Enrichment program, Family Travel Adventures and our Summer Programs. Prior to arriving at The Potomac School, she was Director of Operations for the National Symphony Orchestra, taught at St. Paul's Pre-School in Alexandria and began her career with Leonard Bernstein in New York City. Mimsy received her BA in music from Vassar College and graduated from Choate Rosemary Hall. Mimsy enjoys being part of the summer fun at Potomac!
(703) 883-2252

Meet Our Staff

Greg Mueller, Director of Summer Programs

Greg began his association with Potomac Summer Programs 17 years ago as the co-founder of the robotics program and then as a director-intern with our Nature Science Camp before becoming its Director. He continued in this role for 6 years before becoming Director of Summer Programs in 2011. During the school year, Greg is a science teacher in our Intermediate School. He began his teaching career in public schools in both Virginia and North Carolina and was an educator on the waterways with the Chesapeake Bay Foundation.

His two young children attend camp in the Panther Camps. Greg is a born leader, loves to motivate children of all ages and enjoys all aspects of summer camp., or phone (beginning June I): 703-749-6318

Wendy Smith, Assistant Director of Summer and Auxiliary Programs

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Wendy first came to Summer Programs as Assistant Director in 1991 and served in that capacity until 2003. She returned to the Summer & Auxiliary Programs Office in 2011, having enjoyed traveling with her husband, playing golf, and spending time with her family. Wendy is happy to help guide families through the registration process as she manages camper enrollment and accounts., 703-749-6317

Lisa Medici, Assistant to the Director of Summer Programs

Sarah O'Neill, Director of Discovery Camp

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Starting out as the lead teacher for Young Inventors and later being the Director of Extended Hours, Sarah has had a variety of roles for Summer@Potomac. Sarah has been a part of the Potomac community since 2012, when she began as an intern during the school year while receiving her Masters in Education. Each year Sarah enters the summer months with energy and excitement for a fun-filled camp experience. Sarah strives to make the Discovery Camp the best summer ever for our campers.

Sarah has her BA from Franklin & Marshall College and her M.Ed. from Marymount University. Having taught in grades second through sixth, she has experience with a variety of ages. Sarah is currently a third grade teacher at Alexandria Country Day School. In her free time, Sarah enjoys the outdoors. From hiking local trails to exploring new locations, she is up for anything as long as she has hiking boots on and her dog by her side.

Ben Buursma, Nature Science Camp Director

With parent's as educators, the rhythms, joys, and challenges of a teacher's life formed the landscape of Ben's childhood. Best of all, his school-oriented schedule meant summers were free to spend on a small inland lake in Michigan. Ben credits the hours he spent swimming, fishing, and playing with teaching him as much as any class he ever took. Those experiences exploring nature led to a career in education centered on discovery and inquiry. During the school year, Ben works as Potomac's fourth and fifth grade science teacher. In many ways, Nature Science Camp has served as a natural compliment to his teaching as he seeks to create a safe place for students to indulge their curiosity and test their assumptions.

Alison Jacoby, Panther Day Camp Co-Director


Alison is returning as Director of the Panther Day Camp for an eighth year after being the lead teacher in the Day Camp Surprise class for five years. While the Surprise teacher, Alison brought her background in creative dramatics and puppetry to the camp in characters such as Chef Francine, Miss Rutabaga, and Baxter Bear puppet who took campers on scavenger hunts around the campus. She now brings her knowledge and experience to oversee and support an amazing Day Camp staff each year. Being Director of the Day Camp has given Alison the opportunity to interact with campers in all the classes, and to encourage imaginative and creative thinking with campers and staff. She received a BFA from West Virginia University more years ago than she would like to admit, and is currently on the Kindergarten team at Colvin Run Elementary School.