Cynthia started her teaching career in college, teaching math and history for two summers at Breakthrough Manchester (New Hampshire) to middle school students. After college, she worked as a Girl Scout professional in Pennsylvania for three years before heading to graduate school at the University of New Hampshire to become a social studies teacher. She taught middle and high school at public, private, and online schools for the next 13 years before becoming a math teacher in 2017 at Oldfields School in Maryland. Cynthia loves helping students to feel more confident in math and to see the beauty in finding different ways to solve a problem. She has also served as assistant Varsity softball coach for five years at Oldfields School and one year at Sandy Spring Friends School.

Outside of school, Cynthia is an avid choral singer, with international choral tours to England and Wales (2005), China (2007), Finland and the Baltics (2017), and most recently Germany and the Czech Republic (2024). She also enjoys knitting — check out her collection of scarfs and shawls when the weather gets cooler! She lives with her cat, Ruth Bader Ginspurr, and enjoys a good game of cards.

Rachel Feldman is a graduate of Bowling Green State University in Ohio, where she earned her degree in Secondary Mathematics Education (grades 7-12). She then continued her education by earning her Master’s degree in Learning Design from the University of Illinois while also beginning her teaching career in Chicago. She has taught a wide range of students at the middle and high school levels, including courses in Pre-Algebra, Algebra 1, Geometry, and College Algebra. She loves to teach using hands-on, real world applications that emphasize cooperation and problem-solving. She is excited to have joined such a dedicated and inspiring community at Walker’s!

Justine Medic is a mathematics teacher with a passion for helping students build confidence and curiosity in the classroom. She holds a bachelor’s degree in mathematics and a master’s degree in educational leadership. Before joining The Ethel Walker School, she spent several years teaching at an independent boarding school, where she developed a deep appreciation for the unique connections formed in a residential academic community. After taking time to raise her three children and work as a full-time mathematics tutor, she returned to the classroom at Walker’s, where she has taught Geometry, Algebra I and II, Precalculus, and Calculus.

Jennifer Wall, a private math tutor for middle, high and college students, joined Walker’s in 2016 as a member of the math faculty. Jennifer is a graduate of the College of New Jersey and the New York Institute of Technology where she earned her master’s degree in instructional technology. Previously, Jennifer was a math teacher at Northern Valley Regional High School in New Jersey. She served as a long-term substitute at Walker’s during the 2011–2012 academic year where she taught AP calculus, AP statistics, honors calculus and trigonometry.