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College, Test Prep, and Python Tutor: GRE, GMAT, MCAT, Data Science
Charles P.

5.0 (2,458 ratings)

9,911 hours tutoring

Your first lesson is backed by our Good Fit Guarantee
Hourly Rate: $80
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Response time: 2 hours

About Charles

Bio

I'm a graduate of Princeton University with a passion for teaching. I quite simply enjoy leading students through difficult course material and preparing them for standardized exams. I believe that learning is an ongoing process and that tutoring should make that process more manageable.

My tutoring services mainly focus on test preparation. Scoring in the 99th percentile on the math and chemistry sections of the GRE, GMAT, MCAT, SAT, SAT Subject, and AP exams, I have also obtained high...

I'm a graduate of Princeton University with a passion for teaching. I quite simply enjoy leading students through difficult course material and preparing them for standardized exams. I believe that learning is an ongoing process and that tutoring should make that process more manageable.

My tutoring services mainly focus on test preparation. Scoring in the 99th percentile on the math and chemistry sections of the GRE, GMAT, MCAT, SAT, SAT Subject, and AP exams, I have also obtained high combined scores in the math and verbal sections of the SAT (99th percentile) and GRE (98th percentile) exams.

Tutoring for over 6 years, I credit my success to a single philosophy: above all, I try to instill confidence in my clients by helping them manage their academic workload. In every lesson, I negotiate their expectations while also putting them in the best possible position to succeed. Beyond providing customized worksheets and study guides, my services reduce stress levels and increase sustained focus. Consequently, my sessions are known to be very productive.

My services also cover college/high school math and science courses. Since I have extensive experience working with local students attending Columbia, NYU, Hunter, and other CUNY schools, I am quite familiar with the testing style of specific professors.

Lastly, I am flexible with times and meeting locations. I work as a full-time tutor, so scheduling is rarely an issue. I mainly tutor within Manhattan, but also conduct lessons in Queens or Brooklyn, if my workload allows it. I also enjoy working online whenever students are unable to meet in person.

Best Regards,
Charles

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Education

Princeton University
Mech Engineering

Policies

  • Hourly Rate: $80
  • Rate details: Cancellation Rates: $80 per cancellation (In-person sessions)
  • Lesson cancellation: 24 hours notice required

  • Background check passed on 3/6/2017

  • Your first lesson is backed by our Good Fit Guarantee

Schedule

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Approved Subjects

Chemistry

Chemistry

Chemistry is one of my favorite subjects to tutor. Ever since taking AP Chemistry in high school and Advanced Chemistry in college, I have gained an appreciation of the work required to master the course. Whether teaching stoichiometry, periodic trends, or kinetic molecular theory, I help students effectively learn complex concepts in a short period of time.
Data Science

Data Science

I am a Princeton graduate with over 20 years of programming experience in Python, Java, and R. Specializing in data science techniques, I have utilized linear, logistic, ARIMA, and neural network models for regression, categorical, and time series analysis. My experience also includes feature reduction (PCA), generative adversarial networks (GANs), regularization (Lasso and Ridge), and Natural Language Processing (NLP). One of my recent clients was hired as an AI specialist for a Fortune 1000 company.
GMAT

GMAT

I'm an expert in standardized math test preparation, having recently scored a 50 on the GMAT's quantitative section. Being quite confident in my approach to the exam format (e.g. data sufficiency), I routinely employ methods that maximize time and content knowledge to achieve the highest score possible. Beyond that, I have access to a number of GMAT question banks, which have been helpful to dozens of clients over the years.
GRE

GRE

Though I scored in the 98th percentile (Q:163 V:163) of the GRE, I mainly focus on the quantitative portion while also discussing strategies and techniques used for all sections. Below you'll find answers to frequently asked questions, but feel free to contact me to discuss the benefits of tutoring. 1) How much can I expect my score to increase? Students who start tutoring with me at least one month prior to their exam date tend to improve their quantitative score by more than 8 points. 2) What resources do you provide? I provide standardized material from a range of test prep companies, including the official ETS material. I also hand out practice worksheets and study guides for review after each session. 3) How do you plan out sessions? During the first few sessions, I try to assess a client's comfort level with the material, reviewing past exam results and asking diagnostic questions. I then create a study plan, picking the topics and strategies I feel will most likely boost test scores in the shortest period of time. 4) How do you conduct each session? I spend the first part of each session answering questions about practice problems. I then try to drill though specific math topics as we work through setting up increasingly complicated exam questions.
Machine Learning/ AI

Machine Learning/ AI

I am a Princeton graduate with over 20 years of programming experience, including Python, Java, and R. Specializing in Agentic AI frameworks, I have developed systems on the Google Cloud (LangGraph and ADK using Vertex AI) and the Amazon Web Services platforms. One of my recent clients has been hired as an AI specialist for a Fortune 1000 company.
MCAT

MCAT

With years of experience working with college chemistry and physics students, I specialize in tutoring the Physical Science section of the MCAT (Score: 130). Many of my clients have seen a significant improvement in their scores. My approach starts with a general review of high yield concepts and then progresses to a more focused discussion of test-taking strategies, including ways of reading through passages efficiently, performing mental math tasks, and selecting the most appropriate formula for any given question.
Mechanical Engineering

Mechanical Engineering

I have a BSE degree in Mechanical Engineering from Princeton University. As a tutor, I specialize in statics and dynamics. In the past, I've successfully tutored engineering students at Harvey Mudd and Case Western.
Organic Chemistry

Organic Chemistry

Organic chemistry is a tricky course. It starts off simple enough, reviewing topics like orbital hybridization, line angle structures, and IUPAC nomenclature. However, when the class starts integrating reactions into the discussion, students are usually overwhelmed by the amount of memorization required. At this point, the difficulty level in Organic Chemistry I increases exponentially and it keeps rising through Organic Chemistry II. Once students fall behind, it's quite challenging for them to solve multi-step synthesis problems, to draw out mechanisms, and/or to memorize reagents confidently. I have 3 years of experience tutoring organic chemistry students at Hunter, Columbia, and Stonybrook. I've developed methods of organizing reagents and mechanisms by using study guides and worksheets customized to suit college curricula. I've also devised study strategies to maximize study time and to reduce frustrations. A number of students have reached their academic goals using these study techniques.
Probability

Probability

I have expertise in tutoring probability questions for the GRE and GMAT.
Python

Python

I have seven years of professional programming experience working for a private firm headed by a Princeton professor. Over the years, I have increased my knowledgebase by learning how to code in python. Expertise includes working with IDEs (PyCharm, Spyder, Visual Studio), data science (numpy, pandas), machine learning (tensorflow, keras,skilearn), app development (kivy) and automation (selenium, hadoop).
SAT Reading

SAT Reading

I specialize in Math SAT preparation.
ACT Math
Algebra 1
Algebra 2
Biology
Calculus
Computer Programming
Geometry
HTML
Java
JavaScript
Linear Algebra
Physical Science
Physics
Precalculus
R
SAT Math
SQL
Statistics
Trigonometry

Examples of Expertise

Charles has provided examples of their subject expertise by answering 4 questions submitted by students on Wyzant’s Ask an Expert.

See all of Charles ’s answers ›
Charles P.'s Photo

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Ratings and Reviews

Rating

5.0 (2,458 ratings)
5 star
(2,445)
4 star
(10)
3 star
(2)
2 star
(0)
1 star
(1)

Reviews

A+ Tutor - Knowledge and patient

Charles has been a terrific tutor for my 17-year-old daughter in AP Chemistry. He reviews the material in a manner that is easy to understand and fosters a positive learning environment. My daughter’s ability to comprehend the material has increased greatly since Charles has been assisting her. Her grades show that as well. Charles makes scheduling easy and is always accessible for questions. We highly recommend Charles!

Annette, 104 lessons with Charles

awesome & patient

Charles is the absolute best. He is sooo knowledgeable and patient. He has helped me with Python and Machine Learning.

Nichol, 6 lessons with Charles

Knowledge and willing to go over whatever you need

Each section I’m able to come to Charles and show him problem areas and we can go through them together. He’s been able to teach me different ways to learn gre math that are easier than memorizing a formula

Alexis, 7 lessons with Charles

Very knowledgeable!

Charles really breaks down the subject matter (AP Chemistry) into smaller parts easier to understand and learn. We will schedule weekly in person sessions until my son gets his grade on track. It has been difficult to find a tutor that has current chemistry experience and knows how to tutor in the subject. Charles does both extremely well.

Tamara, 18 lessons with Charles

Fantastic and Very Knowledgeable

Charles is an excellent teacher and well prepared - college level math/data science is not easy to grasp but Charles has really helped build my knowledge and confidence.

Evan, 5 lessons with Charles

Flexible and supportive tutor.

Charles is helping my son with PreCalculus. After one session my son has already stated that he feels more confident in the subject. He is looking forward to next session.

Anonymous, 2 lessons with Charles

Knowledgeable and patient tutor

Charles is an expert chemistry tutor and he’s very easy to learn from. I went from getting a D on my first exam to an A on every other exam. This guy knows his stuff!

Brianna, 6 lessons with Charles

Best choice we made

Our daughter was struggling with AP Chemistry. We scoured several tutoring services on the web,we didn’t feel comfortable with them. We gave it a try and it turned out to be a great choice for our daughter. Our tutor Charles has been a great help to her. Our daughter was in the verge of failing, she finished the course with a B. Charles is very flexible, professional and delivered. He helped our daughter with Precal as well. And our daughter did very well. We’re very grateful for you Charles. We thank you!

Lorina, 18 lessons with Charles

knowledgeable and patient

Charles helped my daughter with her computer science capstone project. He is very good at programming.

Rifa, 3 lessons with Charles

Great Tutor

Charles was knowledgeable and easy to work with. He explained content so it was easy to understand. Additionally, he was flexible with scheduling. I would highly recommend Charles as a tutor.

Thai, 4 lessons with Charles
Hourly Rate: $80
Response time: 2 hours
Contact Charles