Walker
Walker earned his undergraduate degree in applied math from Columbia University and later finished a master's degree in statistics from Duke University. He now works for the New York Yankees as a quantitative analyst in their front office.
Yael
Yael earned a BA in Math and the History of Art and Architecture from Harvard College (magna cum laude, Phi Beta Kappa). In her senior year of college, she began the Harvard Teacher Fellows Program, through which she earned a Masters of Education from the Harvard Graduate School of Education.
Stefan
Stefan majored in Public Policy and Urban Studies at Stanford University. He earned his Master's in Public Policy at Harvard University, and is a PhD student in Urban Planning at Columbia University.