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Math, Physics, Bio & Chem Expert | Ivy League Grad | AP SAT SSAT ACT
John K.

40 hours tutoring

Your first lesson is backed by our Good Fit Guarantee

Hourly Rate: $175
Response time: 3 minutes

About John


Bio

Hello, my name is John and I have been helping students to achieve their academic goals.

I provide extensive tutoring in Math, Physics, Chemistry, Biology and Computer Science for all levels, including AP and SAT preparation. My background includes 20+ years of private tutoring, tutoring at Kaplan, and also supporting students at prestigious boarding schools. My ability to tutor across multiple subjects offers a unique advantage, allowing me to help students achieve a deeper level of...

Hello, my name is John and I have been helping students to achieve their academic goals.

I provide extensive tutoring in Math, Physics, Chemistry, Biology and Computer Science for all levels, including AP and SAT preparation. My background includes 20+ years of private tutoring, tutoring at Kaplan, and also supporting students at prestigious boarding schools. My ability to tutor across multiple subjects offers a unique advantage, allowing me to help students achieve a deeper level of understanding.

My teaching philosophy is built on providing personalized and continuous support. I provide detailed PDF notes after every lesson and remain accessible for questions as well as provide hand-picked questions that may benefit students’ understanding. My goal is to make learning engaging and fun!

I am readily available for questions and keep a track of all progresses made by students.


Education

Columbia University
Biomedical Eng.

Additional Languages

Korean

Policies


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Approved Subjects

Calculus

Calculus

I have been tutoring Calculus for 20 years. I can break down the most confusing and difficult concepts and help to retain formulas and to gain problem-solving skills. I provide detailed notes as well as practice problems in between sessions.
Chemistry

Chemistry

My Proven Tutoring Approach Conquering Chemistry Complexity Chemistry often intimidates students with its abstract concepts and technical calculations. My proven method bridges the gap between abstract theory (like electron configurations and chemical bonds) and practical problem-solving. We will work together to simplify the conceptual models and calculations that often feel overwhelming, from stoichiometry to equilibrium. A Focus on Visual Learning We won't just talk about theory; we'll see it. To ensure true mastery, I use a visual approach with detailed diagrams, molecular models, and clear comparisons. This method is highly effective for breaking down difficult topics, including reaction mechanisms and thermodynamics. Resources That Last My support doesn't end when the session does. After every meeting, you will receive a comprehensive, professional PDF summary of everything we covered. These notes serve as your personal study guide, reinforcing our work and providing a clear reference for homework and exams.
Physics

Physics

My Proven Tutoring Approach Conquering Physics Complexity Physics often intimidates students with its abstract concepts and complex calculations. My proven method bridges the gap between abstract theory (like vector fields and relativity) and practical, step-by-step problem-solving. We will work together to simplify the conceptual models and mathematical approaches that feel overwhelming, from Newton's Laws to Electromagnetism. A Focus on Visual Learning We won't just talk about theory; we'll see it. To ensure true mastery, I use a visual approach with detailed free-body diagrams, circuit diagrams, and clear, real-world comparisons. This method is highly effective for breaking down difficult topics, including rotational motion, kinematics, and E&M fields. Resources That Last My support doesn't end when the session does. After every meeting, you will receive a comprehensive, professional PDF summary of everything we covered. These notes serve as your personal study guide, reinforcing our work and providing a clear reference for homework and exams.
Precalculus

Precalculus

My Proven Tutoring Approach Conquering Pre-calculus Complexity Pre-calculus often intimidates students with its abstract concepts and rigorous algebra. My proven method bridges the gap between abstract theory (like function analysis and trigonometric identities) and practical, step-by-step problem-solving. We will work together to simplify the conceptual models and calculations that feel overwhelming, from mastering the unit circle to graphing rational functions. A Focus on Visual Learning We won't just talk about theory; we'll see it. To ensure true mastery, I use a visual approach with detailed function graphs, unit circle diagrams, and clear comparisons. Here is that text adapted for Pre-calculus: My Proven Tutoring Approach Conquering Pre-calculus Complexity Pre-calculus often intimidates students with its abstract concepts and rigorous algebra. My proven method bridges the gap between abstract theory (like function analysis and trigonometric identities) and practical, step-by-step problem-solving. We will work together to simplify the conceptual models and calculations that feel overwhelming, from mastering the unit circle to graphing rational functions. A Focus on Visual Learning We won't just talk about theory; we'll see it. To ensure true mastery, I use a visual approach with detailed function graphs, unit circle diagrams, and clear comparisons. Shutterstock This method is highly effective for breaking down difficult topics, including function transformations and understanding trigonometric graphs. Resources That Last My support doesn't end when the session does. After every meeting, you will receive a comprehensive, professional PDF summary of everything we covered. These notes serve as your personal study guide, reinforcing our work and providing a clear reference for homework and exams.
SAT Math

SAT Math

My Proven Tutoring Approach Conquering the Digital SAT Math The Digital SAT Math section often intimidates students with its tricky wording, intense time pressure, and a broad range of topics. My proven method bridges the gap between forgotten core concepts (like Algebra and Geometry) and the specific test-taking strategies needed to succeed. We will work together to simplify the multi-step word problems and data analysis questions that feel overwhelming, turning "trap" questions into easy points. A Focus on Strategy & Visuals We won't just do problems; we'll learn how to see them. To ensure true mastery, I use a visual approach to deconstruct word problems, master the built-in Desmos graphing tool, and identify patterns in the test. This method is highly effective for breaking down the most-tested topics, including linear/quadratic functions, systems of equations, and trigonometry. Resources That Last My support doesn't end when the session does. After every meeting, you will receive a comprehensive, professional PDF summary of everything we covered. These notes serve as your personal study guide, reinforcing our work and providing a clear reference for homework and practice tests.
SSAT

SSAT

I have sent many students to top boarding/day private schools
ACT Math
ACT Science
Algebra 1
Algebra 2
Biology
Geometry
Prealgebra
PSAT
Trigonometry
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Ratings and Reviews


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Reviews

Highly recommend!!!

Excellent in explaining difficult concepts. Different perspectives than textbooks really helped to understand. Also custom tailored questions sets after each lesson were very helpful. Thank you!

Sunny, 7 lessons with John

Very Effective tutor! Highly recommend!!!

​I highly recommend John as a tutor. My daughter was having a very difficult time with electronic configurations and cloud models. After just one session, she not only understood the concepts but was able to explain them to her classmates! The tutor notes and extra problems John provided were also extremely helpful for her review. We are so grateful for his help!

Matt, 19 lessons with John
Hourly Rate: $175
Response time: 3 minutes
Contact John