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Zak Ringelstein is the Founder and CEO of Zigazoo. Prior to this, they served as the 2018 Democratic nominee for U.S. Senate and was the CEO and Founder of UClass, which was acquired by Renaissance Learning in 2015. Zak also taught at the International School of Tanganyika and Isaac School District #5 as part of Teach For America. Their previous experience also includes working as a researcher at the United Nations' Millennium Village Project.

Zak Ringelstein received their Doctor of Philosophy in Politics and Education from Teachers College, Columbia University. Zak also holds a Bachelor of Arts in Theirtory and Human Rights from Columbia University in the City of New York and a Master’s Degree in Education from Arizona State University.

Rob Andrews - CTO, Brad Webb - Head of Product, and Saiji Kanak - COO report to Zak Ringelstein.