Faculty

Andrew callard

Andrew taught middle schoolers math and coached the Math Counts team at Sidwell Friends for 23 years.  In his position as middle school math department chair over the last 16 years, he wrote enrichment curricula for the 5th, 6th, 7th and 8th grades, respectively, to ensure that the most talented students in each grade are adequately challenged and stimulated in their math classes.  He won his Sidwell Friend's Alice Dater prize, awarded to honor outstanding teaching from a faculty member in 2011.  He has coached his team to first place at the State MathCounts Competition for DC public and private middle schools in 2001, 2009, 2012, 2013, 2014, 2015, 2017, and 2019.  In addition to being a lover of puzzles and challenging math problems, he is a singer and composer who has recorded with numerous professional musicians all over the world.  He holds a B.A. from Brown University and M.A in Math Education from the University of Maryland.   

martin “marty” suresh

Martin (aka “Marty” to his students) has been a beloved faculty member at Sidwell Friends since 2013.  In addition to teaching a variety of computer science classes in the Upper School, from introductory programming to mobile app design, Marty coaches both the Middle School and Upper School Cross Country teams, and also helps to guide our nationally acclaimed Sidwell Friends Upper School robotics team.  He holds a bachelor’s degree in Mechanical Engineering from the Massachusetts Institute of Technology, and a master’s degree in secondary education from American University.  Marty is tremendously excited about both guiding your children through a variety of engaging computer science projects over the course of two weeks.       

teaching assistants

Each summer, we hire highly qualified high school and college students who have excelled at mathematics over the course of their career as our teaching assistants.  As talented mathematicians who share the students' passion for tackling difficult problems, these teaching assistants serve as inspiring and engaging role models, and support the participants as they grapple with problem-solving challenges over the course of the two-week session.   They also enable us to provide highly individualized instruction and support for each student;  the student to instructor ratio typically hovers around 6:1.