© 2023 CityTutor DC. Registered 501(c)(3). EIN 81-3516887 ¹ Lee, J.Y. (2013). “Private tutoring and its impact on students' academic achievement, formal schooling, and educational inequality in Korea.” Unpublished doctoral thesis. Columbia University. You have two options: either take a quiz, and Varsity Tutors will pair you with a smaller po