UC Berkeley Math Student | 99th Percentile SAT | Desmos Specialist

Kai S.

I'm Kai, an Applied Mathematics student at the University of California, Berkeley. I graduated from The Bay School of San Francisco with a 4.0 unweighted GPA and a 1530 on the digital SAT (780 Math, 750 Reading & Writing).

As a tutor, I specialize in helping students raise their SAT math scores by using official College Board materials and the Desmos graphing calculator, which is built into the digital SAT. I also co-created desbros.org, a resource designed to teach high school students how to use Desmos efficiently and intuitively—a skill that is key to scoring well on a test that rewards speed and accuracy.

Previously, I worked at Crackd (crackd.it), a leading SAT prep platform, where I contributed SAT math curriculum, developed structured, self-paced lessons and video tutorials that break each major question type into clear, step-by-step methods.

My approach focuses on identifying the patterns behind SAT questions and helping students apply consistent, repeatable strategies. I've built an interactive, self-paced SAT math course that covers major question types, walks through detailed problem-solving techniques, and features integrated practice questions to reinforce understanding.

At UC Berkeley, I have completed Calculus II, Calculus III, linear algebra, and differential equations. My background also includes advanced high school coursework in calculus, linear algebra, quantum mechanics, and physics. In these courses, I regularly assisted my classmates by explaining difficult concepts and working through challenging problems together. I have experience tutoring middle and high school students across a wide range of abilities and learning styles.

My goal is to create a supportive, collaborative environment where students build both confidence and independence, inspiring curiosity in how they approach mathematics and giving them the tools to tackle new problems on their own.