2 Sigma is implemented in a network of partner schools, and supported by a team of 2 Sigma specialists. The 2 Sigma team documents and applies the experiences of each school across the network. This allows constant optimization of the methodology for all involved schools.






Jeff Kiderman, Co-Founder

Jeff oversees the 2 Sigma roadmap and its collaborations with partners and schools. Prior to founding 2 Sigma, Jeff was a digital marketing consultant, helping Fortune 500 companies personally tailor their online and offline experiences to meet different customers’ needs.

Jeff earned bachelors degrees from both the Wharton School and the School of Engineering & Applied Science at the University of Pennsylvania, as well as a Masters degree in Education from Teachers College, Columbia University. Jeff lives with his wife and son in New York, NY.


Avrumi Sacks, Co-Founder

Avrumi leads the development and rollout of the 2 Sigma model, using over two decades of experience as an educator and administrator.

Most recently, Avrumi served as Principal and Director of Education at the Hillel Academy of Pittsburgh, where he oversaw the education of children from pre-nursery through 12th Grade, and managed a staff of 70 educators and employees. Avrumi earned both his bachelor’s degree and his Masters in Education and Administration from Yeshiva University.

Partner Schools

Software Partners

2 Sigma incorporates a variety of proven online educational tools to develop and assess students’ language and math skills. These third-party tools have been carefully vetted and selected from hundreds of options nationwide, and piloted in controlled environments. Each tool is personalized, adaptive, cloud-based, and aligned to the Common Core State Standards. Learn how software fits into the 2 Sigma model.

My son is now the first one out of bed, excited every morning. You have changed his outlook on school.
— 3rd Grade Parent