His father was a medical doctor but he was fascinated by mathematical puzzles, an interest he soon gave to Isaac. Schoenberg studied at the University of Jassy (Iasi, Moldavia) and received his M.A. in 1922.
Kanyang ama ay isang doktor na medikal ngunit siya ay nabighani sa pamamagitan ng matematika puzzle, isang interes siya sa lalong madaling panahon ibinigay sa Isaac. Schoenberg-aral sa University of Jassy (Iasi, Moldabya) at natanggap na ng kanyang MA sa 1922.