Meet our founder
Sarah Dillard has been working in education for almost 20 years, most recently as the founder of Kaleidoscope Education. In that capacity, she worked with high school students from more than 30 DC-area high schools and 100+ countries around the world, teaching them the modern liberal arts courses that form the basis of the academic program at The Rock Creek School. More than 90% of Kaleidoscope students reported that as compared to other classes, their Kaleidoscope courses were more engaging, more relevant, prepared them better for college, and treated them more like adults.
Sarah was previously on the policy team at the US Department of Education, the founding team at the National Math & Science Initiative, and the management team at Quad Learning. She started her career at Bain & Company.
Sarah is a graduate of the Harvard Business School and the Harvard Kennedy School, where she was a Reynolds Fellow and a George Fellow. She also holds a BA in economics, magna cum laude, from Duke University, where she was an A.B. Duke Scholar and won the Holton Prize for education research.
Sarah is a trustee at Capital City Public Charter School, a member of the ANC 2B mobility committee, and an emeritus member of Harvard’s Center for Public Leadership alumni advisory council.
Meet the Team
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Jim Diamondidis
MATH & OPERATIONS DIRECTOR
Jim is designing our math program at Rock Creek, as well as heading up our launch operations. Most recently he was a math teacher and prior to that worked as a quant at a hedge fund. Jim has taught math to students at all levels—from kids who are struggling to advanced graduate students. He earned his BS in mathematics from Harvard College where he was a writer for The Crimson, a backpacking leader, and an actor in musical theater.
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Edie Abraham-Macht
ENGLISH
Edie is an English teacher and a published and award-winning writer. She earned her B.A. in American Studies from Yale University where she graduated Phi Beta Kappa as an Education Studies Scholar. She is also a graduate of NYU’s Teacher Residency program with an MAT in Secondary English Education.
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Krishnendu Ray
SCIENCE
Krish is an award-winning teacher and working scientist, passionate about sparking interest in the subject. He has a D.Phil. in theoretical physics from Oxford University where he was a Rhodes Scholar. He also has an MSc. in Mathematical and Theoretical Physics from Oxford and an MSc. in Physics from the Chennai Mathematical Institute, from which he also earned BSc. degrees in mathematics and physics. Krish is the founder of the Einstein Memorial Lectures at Rhodes House and an International Strategy Forum Fellow.
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Katharina Matro
SOCIAL SCIENCES
Katharina is an award-winning teacher and historian. In her classes, she emphasizes historian’s actual work. As much as possible, she puts scholarly historical texts in front of her students to help them see how these stories are constructed. Katharina has a Ph.D. in history from Stanford University, an M.A. in international economics from SAIS, and a BA in French from Amherst College, summa cum laude. Until 2024, Katharina was a member of the American Historical Association Council’s Teaching Division and has been a guest on the podcast of documentary filmmaker Ken Burns.