Mekorot Blended Learning seeks to improve both the quality and affordability of Jewish day schools by producing curricula in Judaic Studies for students in grades five through high school that are teacher-led, student-centered, differentiated, and employ Blended Learning. Better education and lower cost creates a virtuous cycle of sustainability. In this article, we will explain our Design Thinking approach by defining the problem to be solved, presenting the motivation of the persons who want the problems solved, our idea for solving them, our prototype (Mekorot Learning), and our plans for testing the proposed solution.