 When Rosetta Stone and other educational resources were not working efficiently enough for him, Cohen created a Microsoft Excel program that would quiz him on individual vocabulary words and verb conjugations, then repeat those concepts within an interval of time that felt appropriate to his pace of learning.Cohen later followed this passion by pursuing a master's degree in Education Technology from Columbia University, where he focused his graduate research on the concept of CBR and built a more complete prototype using the Java programming language.In 2010, he partnered with Andy Lutz, the ex-VP of Product from The Princeton Review, and he began seeking venture capital and was able to raise over $3 million, in three tranches, by 2015.