Princeton Math PhD | Middle & High School/College Math | AMC/AIME/IMO

Chris Z.

I love math & teaching—that is why I am here: to share this passion with you.

I earned my undergraduate degree in CS. After winning the #1 ranking in a national math competition, I continued on to Princeton, where I obtained a Ph.D. in Mathematics, specializing in Algebraic Number Theory under the direction of Shimura and Wiles.

During my time at Princeton, I became a highly sought-after math tutor for local high school and college students. I also co-founded the Princeton Tutoring Group with three fellow tutors. I strive to inspire students’ curiosity and interest in mathematics while training their mathematical mindset, so they not only learn math but also learn how to think mathematically. Many of my students went on to pursue math or technology majors and careers.

After graduating from Princeton, I served as an Adjunct Professor at Rider University, where I taught and conducted academic research before transitioning into Data Analytics & Data Science. Since then, I have worked as a Data Analyst, Data Scientist, and Chief Data Officer. Despite a demanding professional schedule, I have consistently continued teaching and tutoring through (mostly) online lessons.

I am bilingual (English & Chinese). My teaching philosophy emphasizes active engagement rather than passive learning. I focus on developing students’ mathematical thinking and problem-solving skills. Under my teaching, many students have achieved top honors in prestigious competitions such as the AMC, AIME, USAMO, CMO, and the Putnam Exam. It is possible if you want to try me out for free.