Harlow graduated from The Blake School, a private co-educational college preparatory school in Minneapolis, in 2001. She then graduated magna cum laude, Phi Beta Kappa, from Columbia University, with a bachelor's degree in Political Science and Middle Eastern studies. Harlow's nickname “Poppy” is a childhood nickname that stuck. She earned a Master of Studies in Law (M.S.L.) degree from Yale Law School in 2022.
